Line Sharing Switch (LSS) M-392, M-393, and M-394 Product Manual

Transcription

1 Line Sharing Switch (LSS) M-392, M-393, and M-394 Product Manual , Rev. F

2 Note This manual covers Models M-392-B-01/02, M-393-B-01/02, and M-394-B-01/02. Copyright Notice Copyright Teltone Corporation All Rights Reserved Trademarks Teltone is a registered trademark of Teltone Corporation. Windows is a registered trademark of Microsoft Corporation. Other company and product names may be trademarks or registered trademarks of their respective owners. Teltone Corporation Bothell, Washington, USA Customer Service: Technical Support: Fax: [email protected] Website: , Rev. F

3 Reference Manual Contents Contents U.S. FCC COMPLIANCE INFORMATION iii CANADIAN COMPLIANCE iv IMPORTANT SAFETY INSTRUCTIONS v SAVE THESE INSTRUCTIONS v About This Manual vi Conventions Used In This Manual vi Chapter 1: Getting Started Where to Start Product Registration Chapter 2: Overview Components Figure 1 Typical Application Programming Compatibility Features Basic Operation Chapter 3: Installing the LSS Are You Ready? LED Indicators Table 1 LED Indicators on the LSS Mounting Options Installing the LSS Figure 2 Installation Using Jack A Installation on PBX or Key Telephone Systems Figure 3 LSS Mounted Using Mounting Strap Figure 4 Adhesive Mounting Pads Figure 5 Line Sharing Switches Chapter 4: Teltone Default LSS Operation with Polling Controller Programming the LSS Using the LSS Programming Commands Table Table 2 LSS Programming Commands Table 3 Routing Codes for Polling Controller Local Programming Remote Programming Chapter 5: Standalone LSS Operation and Programming Figure 5 Standalone Line Sharing Switch Using the LSS Programming Commands Table Table 4 LSS Programming Commands Local Programming Remote Programming Chapter 6: Advanced Applications Cascade Features Figure 6 LSS Typical Cascade Application Programming for Cascaded LSS Units Daisy-chain Operation Daisy-chain Features Programming for Daisy-chained LSS Units Figure 7 Daisy-chain LSS Application Table 5 Routing Codes , Rev. F Page i

4 Line Sharing Switch Daisy-chain Remote Programming Table 6 Remote Programming Daisy-chained LSS Units Alternate Telephone Connection Figure 8 Installation Using Jack B Chapter 7: Warranty, Troubleshooting, and Technical Support Warranty Information Troubleshooting Technical Support Return Procedures Appendix 1: Specifications Appendix 2: Ordering Information Appendix 3: Glossary Index Page ii

5 Reference Manual Contents U.S. REGULATORY COMPLIANCE FCC Part 68 Notice: To comply with FCC Part 68 regulations, the following requirements must be met: 1. If the telephone company requests information on the equipment connected to their lines, please tell them: a. the telephone number the equipment is connected to; b. this equipment operates on standard RJ-11 phone jacks; c. the FCC registration number; d. the ringer equivalence number (REN). The REN shows how many devices, such as phones, modems, etc. can be connected to your line. In most areas, there cannot be more than five devices (i.e., a REN of five) on a phone line. If the REN is exceeded, then your phone may not ring properly. NOTE: Items C and D above are found on the label on any Teltone equipment connected to your telephone line. 2. These devices must not be installed on coin-operated telephone lines or party lines. 3. Repair work on this device must be done by Teltone Corporation. 4. If any trouble is experienced with this equipment, the telephone company may request that the customer disconnect the registered equipment from the telephone line to determine if the registered equipment is malfunctioning and if the registered equipment is malfunctioning, the use of such equipment shall be discontinued until the problem has been corrected. FCC Part 15 Class B Notice: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to pro-vide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/tv technician for help , Rev. F Page iii

6 Line Sharing Switch CANADIAN REGULATORY COMPLIANCE Notice: This equipment meets the applicable Industry Canada Terminal Equipment Technical Specifications. This is confirmed by the registration number. The Industry Canada label or the abbreviation, IC, before the registration number signifies that registration was performed based on a Declaration of Conformity indicating that Industry Canada technical specifications were met. It does not imply that Industry Canada approved the equipment. Industry Canada does not guarantee the equipment will operate to the user's satisfaction. Before installing this equipment, users should ensure that it is permissible to connect it to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be made by Teltone Corporation. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum number of terminal devices to be connected to a telephone interface without overloading the interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the REN of all devices does not exceed five (5) in most, but not all cases. Check with your local exchange carrier for the REN limit in your service area. The REN assigned to each device is located on the equipment label. COMPLIANCE NOTICE: This digital apparatus does not exceed the Class A limits for Radio Noise Emissions set out in the equipment standard ICES-003 for digital apparatus. AVIS DE CONFORMATION: Le présent appareil numérique n émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectriques édicté par le ministère des Communications du Canada. Page iv

7 Reference Manual Contents IMPORTANT SAFETY INSTRUCTIONS When using this product, basic safety precautions, including the following, should always be followed to reduce the risk of fire, electric shock, and injury to persons. 1. Read and understand all instructions. 2. Follow all warnings and instructions marked on the product. 3. The product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply, consult your dealer or local power company. The product is designed for indoor use only. 4. To reduce the risk of electric shock, do not disassemble the product, but take it to qualified service personnel when service or repair work is required. Opening or removing covers may expose you to dangerous voltages or other risks. Incorrect reassembly can cause electric shock when the appliance is subsequently used. 5. If the product does not operate normally by following the operating instructions, or if the product has been dropped or the cabinet has been damaged, or if the product exhibits a distinct change in performance, refer servicing to qualified service personnel. 6. If the product is used in a manner other than specified in this manual, the protection provided by the product may be impaired. 7. For the purpose of removing power from the product, the power input connector is the main power disconnect point. Pull the power cord away from the connector to ensure power disconnect. 8. Adequate air flow must be maintained in order for the product to operate correctly. Do not wrap the product in blankets, paper, or other material that may impede ventilation , Rev. F Page v

8 Line Sharing Switch About This Manual This manual describes the Teltone M-392-A/B, M-393-A/B, and M-394-A/B Line Sharing Switches (LSS). The Polling Controller and one or more LSS units can work together as a system (U.S. Patent Number 5,241,587) or the LSS can operate separately. The reference manual, ( ), accompanying the Polling Controller explains how to install, program, test, and operate the Polling Controller and should be used in conjunction with this manual. Conventions Used In This Manual Where steps are optional, they are labeled: (Optional). Where you are to choose between two or more steps, they are separated by: -or- Each step is accompanied by a check box: Check the box when you finish the step. Some steps are examples and look like this: This is an example step. Page vi

9 Reference Manual Chapter 1: Getting Started Chapter 1: Getting Started Installation and setup may require that a person be on-site with the Polling Controller and another person on site with the Line Sharing Switch. Please note that programming of an LSS is not required to operate the LSS. You should program only if you wish to customize the system for your application. Where to Start Review Chapter 2, Overview, then Chapter 3, Installing the LSS, and then select one of the chapters below to get started. Chapter 4 - Teltone Default LSS Operation with Polling Controller M-392-B-02, M-393-B-02, M-394-B-02, M39X-A&5 Chapter 5 - Standalone Operation and Programming M-392-B-01, M-393-B-01, M-394-B-01, M-39X-A&4 To setup the LSS, follow the instructions in Chapter 3. Note: When you have finished installation and have tested each LSS, you can program the unit to operate with different commands. The factory defaults, which are used until you program the unit, let you get started and operate the unit immediately. Chapter 6 - Advanced Applications Multiple Unit This configuration is intended for experienced users only. Follow the instructions to install, test, and program new port Transfer Codes. Product Registration Fill out the Product Registration card and return it to Teltone Corporation , Rev. F Page 1

10 Line Sharing Switch Chapter 2: Overview The Teltone Polling Controller and LSS enable businesses using multiple dedicated telephone lines for short-duration data transfers to save costs through line sharing. In companies where headquarters regularly poll branch offices for data collection, the system allows devices, such as modems, to share a phone line at the remote location. The LSS can also be used by itself, as a standalone unit giving you a flexible, cost-effective way to consolidate lines. When operating as a standalone unit, calls to the LSS are routed to the device port without a Polling Controller. Figure 1 illustrates a typical system application, in which a single telephone line is shared by four devices: a fax machine receiving automatically routed fax calls, a polled Point of Sale (POS) server receiving incoming calls, one credit authorization terminal making outgoing calls, and one telephone for incoming and outgoing calls. Figure 1 Typical Application Components For maximum effectiveness, the Polling Controller and LSS should be used as a system. The Polling Controller is installed at the central polling location to control access to the line at the LSS. The LSS is located at the business where lines are being consolidated. Three versions are available, enabling connection of two, three, or four devices. The two units communicate across the public switched telephone network (PSTN) to set up and disconnect calls as well as to determine priorities among devices. Standalone LSS If you select this option, the LSS can be used without a Polling Controller to route calls using standard DTMF codes. Although not required, a Polling Controller is recommended for data polling applications. Page 2

11 Reference Manual Chapter 2: Overview Programming LSS options are programmed with a DTMF telephone, either locally or remotely from a Polling Controller. Compatibility Any device that can be connected to a standard loop start telephone line, including telephones, modems, point-of-sale terminals, credit/debit authorization terminals, fax machines, voice mail systems, answering machines, and others, are compatible with the Teltone Polling System. These types of telephone lines are also known as Analog Line, POTS (plain old telephone service) lines, and Single Line Telephone circuits. The LSS will not operate on digital lines or ground start trunk circuits. The LSS will ring up to five (5) telephones connected to any single device port. Note: Customer line usage should be analyzed to determine compatible uses for a single line. Features Programmable Priority Interrupt This option enables you to program if and how an on-going call is interrupted for a higher priority call. The settings are described below: Emergency Priority interrupts an on-going call if the number dialed from the Port 1 telephone matches one of the ten emergency numbers. For example, if you need to dial 9-1-1, but the line is being used by the fax machine on Port 2, dial and your call will be sent through. Total Priority gives Port 1, usually a telephone, access to the line whenever it goes off-hook. When Total Priority is enabled, Port 2 has priority over Ports 3 and 4, and Port 3 has priority over Port 4. Caution: If the LSS is receiving an incoming fax when you go off-hook in either Total Priority Mode or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the sending fax disconnects or the PSTN times out (usually within seconds). No Priority does not allow any emergency call to interrupt an on-going call. Fax Routing This option enables you to route fax calls to a specific LSS port when the LSS detects a faxing tone. Remote Programming Access This option enables you to program the LSS from a remote site. Programmable Default Port This option gives you the ability to change the default port to which a call is routed when no transfer code is provided. This enables you to customize the default ports to match your application or you can use this feature to prevent default routing , Rev. F Page 3

12 Line Sharing Switch Programmable Transfer Codes This group of features improves security by allowing you to specify the DTMF tones which route calls at the LSS, ensuring that calls are transferred to the appropriate port. Transfer codes can be programmed so that the LSS can be used with and without a Polling Controller in the same application. Privacy Timeout When someone takes the telephone off-hook to block incoming telephone calls or when a device (modem or fax machine) is stuck in an off-hook position, the resulting busy line prevents incoming calls to all ports. With Privacy Timeout, the LSS will be able to answer calls and route them to any port, except for the line that is off-hook. Basic Operation The LSS answers incoming calls, determines the destination, and routes the call. If a transfer code is received from a Polling Controller, the LSS routes the call to the requested device, such as a polled modem. If no transfer code is received, the call is routed to the default port (Port 1 is the factory default), usually connected to a telephone (or a telephone and extensions). When the LSS is used without a Polling Controller, the caller must be sure the LSS answers the call before sending transfer codes to route the call to a specific port. An advantage of using the Polling Controller is that the user does not need to generate the pause time in the dial string between the telephone number and routing code to accommodate variable switching delays in the network. In addition, the Polling Controller will hang-up polling calls at the originating end when a priority outbound call is initiated at the LSS. This latter point means that a caller at the LSS will get faster processing of the priority call. Page 4

13 Reference Manual Chapter 3: Installing the LSS Chapter 3: Installing the LSS CAUTION: (1) Never install telephone wiring during a lightning storm. (2) Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. (3) Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. (4) Use caution when installing or modifying telephone lines. Are You Ready? Check that you have: Line Sharing Switch unit(s) Power Supply - PS-24DC-01 Product Registration card (1 for each unit) Mounting equipment: adhesive pads or wall mounting strap. Optional. LED Indicators An LED power and status indicator is located on the front panel. The LED operates as described in Table 1. Table 1 LED Indicators on the LSS LED Operation Indicates Slow blink, full/half brightness LSS idle, normal heartbeat Fast blink, full/half brightness Incoming ring being detected Slow blink, on/off LSS in service Fast blink, on/off LSS is generating ringing to a port Steady on, full brightness, no blink Power present but unit not functioning properly Connectors Power and line jacks are located on the back panel. (See Figure 5.) The requirements for each are listed below: - Power: a Class 2, 24 Volt DC, 400 ma power jack. Use only with a Class 2 power source. The center pin is positive on this jack. The transformer operates from standard 120 VAC wall power. A UL and CSA approved AC to DC transformer is included which converts the input voltage to the 24 VDC required by the unit. - Ports: two, three, or four RJ-11 device ports (models M-392-A/B, M-393-A/B, and M-394-A/B, respectively). Port 1 is the highest priority device port; if a telephone is to use the line it should be connected to Port 1. Ports 2 through 4 are interchangeable and are used to connect other devices sharing the line. - Jack A: an RJ-11 jack for connection of the incoming central office line. The incoming line must be a standard loop start line. Any party line identification hardware must be located at the protector block. - Jack B: See Chapter 6 for this advanced installation note , Rev. F Page 5

14 Line Sharing Switch Mounting Options The LSS is shipped with adhesive mounting pads, each with adhesive backing for mounting the unit to a wall or other surface, shown in Figure 4. The LSS may also be mounted on a wall using mounting strap (UM ), shown in Figure 3 and available as an ordering option. (See Appendix 2.) Installing the LSS The LSS is located at the business or residence where lines are being consolidated. It must be installed on the subscriber side of the demarcation point, between the incoming line and all telephones or other devices sharing the line. Standard modular telephone cords (not supplied) are used for all line connections. The LSS equipment is intended to be used with Loop Start telephone circuits and devices, and should not be used with ground start telephone circuits or devices. Most telephone circuits and devices support loop start operation. Please check with your telephone company, if you are uncertain about your particular telephone circuit. Note: If lightning storms are common in your area, we recommend that you install a surge protection device between the unit and the incoming telephone line. Connect Incoming Line There are two methods for connecting the incoming telephone line to the LSS. The most common one uses Jack A. Jack B is used when devices normally connected to Port 1 are remote from the LSS and you want to use existing wiring. See Chapter 6 for more details. Installation Using Jack A: When the LSS is not required in series with the existing telephone wiring, connect the incoming central office line to Pins 3 and 4 of Jack A. Figure 2 Installation Using Jack A Page 6

15 Reference Manual Chapter 3: Installing the LSS Teltone recommends the use of a standard polarity tester such as Radio Shack Polarity must be correct on the wiring to the units to minimize relay contact wear and avoid bell tap (a momentary or single ring at the telephone). Caution: Make sure that the unit is powered down before using the tester. Plug the tester into the Port 1 jack on the rear panel of the LSS. Check for the following conditions: If the green light on the tester comes on, the polarity of the wiring is correct. If the red light comes on, Tip and Ring are reversed and must be swapped. If no light comes on, the central office Tip/Ring loop is open. Connect a telephone that is to share the line (if any) to Port 1. (If desired, connect an answering machine to Port 1 and the telephone to the answering machine.) Go off-hook on the phone and verify dial tone. Connect other devices that will share the line to the remaining device ports (Port 2 on M-392-A/B; Ports 2 and 3 on M-393-A/B; Ports 2, 3, and 4 on M-394-A/B) Connect the power cord to the Power jack on the LSS and the transformer to a non-switched, standard AC wall outlet. The indicator light on the front panel should be flashing. If it is not on, check that the power cord is securely connected and that the outlet has power. If the LED is on bright, but does not flash, the unit is probably faulty and should be replaced. Place a call to the telephone connected to Device Port 1. The call should be answered on the first ring and the Port 1 telephone should ring after four seconds. Answer the phone, then place the phone back on-hook. Go off-hook on one of Ports 2 through 4 and then attempt to place a call from Port 1. The Port 1 telephone will not seize the line unless the Total Priority feature has been enabled. (Teltone Factory Default is No Priority.) Port 1 callers hear busy tone. If a Polling Controller has been installed, place a call from the Polling Controller to each of the other device ports and verify that the call is routed appropriately. Installation on PBX or Key Telephone Systems The LSS can be installed on the telephone company central office side, or trunk side, of a PBX or Key Telephone System. The LSS can also be installed on the station side or as an extension on a PBX or Key Telephone System, as long as the interface in an analog loop start circuit. For best results in trunk installation, install the LSS in series with the lowest priority incoming line in a PBX or Key Telephone System hunt group. Calls intended for devices attached to the LSS must be dialed directly to the telephone number for this line to prevent misdirected polling or FAX calls , Rev. F Page 7

16 Line Sharing Switch Figure 3 LSS Mounted Using Mounting Strap Apply 2" square dual lock fastening pad to unit as shown (allow for serial number label). Both pieces should be mated prior to installation on unit. Figure 4 Adhesive Mounting Pads Page 8

17 Reference Manual Chapter 3: Installing the LSS Figure 5 Line Sharing Switches , Rev. F Page 9

18 Line Sharing Switch Chapter 4: Teltone Default LSS Operation with Polling Controller This chapter is used for M-39X-B-02 models only. Example: When the Polling Controller and LSS are working together as a system, a typical polling call from a host computer would progress as described below. The host modem dials the polling call to access a modem on Port 3 of the remote LSS, by dialing: The Public Switched Telephone Network (PSTN) processes the call and rings the remote LSS. As soon as the Polling Controller recognizes the 03 as a valid routing code, it splits the line and puts the calling modem on hold. Then it starts sending a translation of the routing digits (one to four unpublished DTMF digits). This translation or transfer code, is sent at regular intervals through the network to the LSS. The transfer code will be sent at regular intervals during the wait period until the LSS acknowledges receipt or until the calling modem times out and terminates the call. The LSS answers the call at the end of the first ring and waits for the programmed amount of time for a transfer code (you program the length of time that the LSS waits for the code, but the default is four seconds). The Polling Controller sends the code at regular intervals to ensure that the LSS recognizes it. If, however, the LSS does not get a transfer code during the wait period, it rings the default port, which is by default, Port 1. When the LSS recognizes the valid transfer code for Port 3, it rings Port 3 and sends an acknowledge tone, a typical modem answer tone, to the Polling Controller, instructing the Polling Controller to connect the host modem to the line to complete the call. Note: The modem answer tone is used so that a Polling Controller can be used to dial remote modems even when no LSS is installed. When the Polling Controller recognizes the acknowledgment tone, it removes the line split so that the calling modem will be listening when the receiving modem attached to Port 3 answers the data call. At this point, the Polling Controller and LSS have established a path for the data call, enabling the calling and answering modems to handshake properly. Programming Transfer Codes The Polling Controller sends transfer codes to the LSS indicating the port to which calls should be routed. Calls also can be manually routed to any of the ports using a one- to four-digit transfer code. Remote programming is also accessed through transfer codes. Each code can be a maximum of four digits in length and can contain any of the 12 DTMF digits. This option must be programmed on both the Polling Controller and the LSS before it will be activated. Please refer to the following section. If you are using the LSS as a standalone unit, the transfer codes can be sent manually from a DTMF telephone or modem. (See Chapter 5, for more detail.) Individual transfer codes can have a maximum of four digits and can contain any of the 12 DTMF digits. No Default Port Use this feature in applications where all of the devices connected to the LSS are used for polling, including Port 1. This feature can program the LSS not to route calls lacking Page 10

19 Reference Manual Chapter 4: Teltone Default LSS Operation with Polling Controller transfer codes to Port 1. You have the option of disconnecting the call or routing it to another port. After receiving the transfer code, the LSS will send a two-digit DTMF signal (#B) to the Polling Controller, instead of the modem answer tone. If a call lacks a transfer code, it can be directed to any of the four ports. When the Polling Controller detects the #B message, it connects to the polling modem. However, if the Polling Controller detects modem answer tone without the #B message, it disconnects the call. If power is lost, calls will be sent to Port 1, regardless of this feature. (Please note that the corresponding option must be programmed in the Polling Controller.) Remote Programming A password-protected remote programming capability is provided. When remote programming is enabled at the LSS, options can be programmed from the Polling Controller. The default password can be changed from the Polling Controller. Loss of Power at the LSS During a power failure, telephones connected to Port 1 can receive and place calls. No other features of the LSS are available. Existing Port 1 connections will not be interrupted by power failure or restoration. Port Access Priority at the LSS There are certain conditions under which a caller making a priority interrupt at the LSS may not be able to immediately obtain central office dial tone which enables the priority call to be processed by the telephone network. The user will experience a dial tone delay and/or receive a busy signal to indicate that she/he should redial in these instances. You can establish one of three types of priority which will determine how competing users at the LSS are given access to the line. This is determined by a programming command, as described in Chapter 4. The priority modes are: If Total Priority Mode is enabled, Port 1 (normally a telephone) is given immediate access to the line whenever the phone goes off-hook. If another port is using the line (for example, data transfer is taking place), the modem is halted and the line made free for the telephone user. Port 2 also has priority access over Ports 3 and 4, but not over Port 1; Port 3 has priority access over Port 4, but not over Ports 1 and 2. If Emergency Priority Mode is enabled, a Port 1 user is given priority when one of the programmed emergency numbers is dialed. The LSS can be programmed to allow up to ten 16-digit numbers. An Access Code can also be programmed to provide emergency line access to allow any number to be dialed. In this mode, Port 2 has total priority over Ports 3 and 4. This arrangement allows time-sensitive credit card verification calls on equipment connected to Port 2 to take priority over other calls. Caution: If the LSS is receiving an incoming fax when you go off-hook in either Total Priority Mode or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the sending fax disconnects or the PSTN times out (usually within seconds). If No Priority Mode is enabled, no port can access the line when another port is using it , Rev. F Page 11

20 Line Sharing Switch Calling Party Supervision The U.S. telephone network typically uses Calling Party Supervision. This means that even though the called party hangs up, they may be reconnected to the calling party when their phone is taken off-hook again. The calling party must hang up in order for the called party to be fully disconnected and initiate a new call. The telephone network will time out and automatically disconnect the call within 5-20 seconds, depending on network design. This will allow the called party to get dial tone when they go off-hook again. To circumvent this problem, when the LSS senses a priority interrupt it immediately signals the Polling Controller to disconnect the original polling call. This procedure ensures that the user initiating the priority will have access to network dial tone to complete the priority call. If for any reason the interrupted call cannot be properly terminated within approximately 5 seconds, a line busy tone is returned to the priority caller. The caller should then hang up for a few seconds before trying the call again. Outgoing Calls from the LSS The LSS allows DTMF and rotary dialing on outgoing calls. Telephone Calls Modem or Other Device Idle: When the LSS is idle, local telephones are connected to a local battery feed. When a phone goes off-hook, it is switched to the central office line to obtain dial tone. When the phone goes on-hook, the line is switched back to a local battery feed. Telephone Calls Modem Active: If in Total Priority Mode, and the modem is active, a priority port going off-hook remains connected to the local battery feed while the LSS disengages the active port. To do this, the LSS forces the modem on-hook (terminating the modem carrier), then sends a disconnect command to the Polling Controller and receives acknowledgment that the Polling Controller has gone on-hook, then goes on-hook towards the central office to obtain a new dial tone for the calling party. If in Emergency Priority Mode, and the telephone at Port 1 goes off-hook, it receives dial tone (generated internally by the LSS). Dialed digits are monitored. If the dialed phone number does not match the allowed numbers, the existing connection through the LSS is not interrupted and busy tone is returned to the telephone user. If, however, the dialed number matches a programmed emergency phone number, data transfer is halted and the line made free for the telephone user. The LSS then dials the number and connects you to the central office line. If you enter the special Access Code, the LSS will connect you to the central office line; when you receive dial tone, dial any number. Caution: If the LSS is receiving an incoming fax when you go off-hook in either Total Priority Mode or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the sending fax disconnects or the PSTN times out (usually within seconds). If in No Priority Mode, the modem or other device remains active and the line is not assigned to another port. If the LSS receives no response from the Polling Controller after three disconnect commands are transmitted, the LSS goes on-hook toward the central office for several seconds to obtain a new dial tone for the calling party. Privacy timeout will not be invoked unless enabled by the user. Read the Privacy Timeout section later in this chapter for more details. Page 12

21 Reference Manual Chapter 4: Teltone Default LSS Operation with Polling Controller Any priority disconnection delay during a polling call will be minimized if the polling modem Loss of Carrier disconnect time delay is set to a minimum acceptable duration. This duration is called the Modem Disconnect on Loss of Carrier. Incoming Calls to the LSS When the LSS is idle, the incoming central office line is disconnected from the internal phone line. The LSS answers all calls at the end of the first ring period. It then monitors for a routing code. The Polling Controller recognizes the routing digits from the polling modem. As an additional level of security, the Polling Controller converts the received routing digits to a transfer code for transmission over the network. If no code is received by the LSS within 4 seconds after answer, ringing voltage is sent to the programmed default port and audible ringback is sent to the calling party. If the telephone is not answered in 1 to 30 rings (default programmed to 12 rings) or a forced Disconnect is received from the central office, the LSS terminates ringing and goes on-hook toward the central office. If a transfer code is received, the LSS sends ringing voltage to the appropriate port. The LSS also generates a modem answer tone toward the Polling Controller, signaling call progress. When the local modem answers, the LSS connects the local modem to the central office lines. The Polling Controller then reconnects the polling modem to the central office line and modem handshake proceeds normally. Interrupted Incoming Call at the LSS If a phone goes off-hook on Port 1 before an incoming call has been connected to a port, the LSS connects Port 1 to the incoming call, and monitors for a DTMF string from the Polling Controller. If a DTMF transfer code is received, the LSS will split the line. What happens next depends on which priority interrupt mode has been programmed. If the LSS is programmed for No Priority, the call will be routed to the appropriate port, and Port 1 will receive busy tone. If in Total Priority Mode, the LSS will perform a disconnect sequence as described previously, and then connect the central office line to Port 1. If in Emergency Priority Mode, the LSS will provide dial tone to Port 1, and the user must dial one of the programmed emergency numbers to gain access to the central office line. The LSS will not route the incoming call to the port selected by the transfer code until either the caller is denied access due to dialing an invalid number, or 5 seconds after the last digit dialed. This design will prevent any modem carrier from interfering with a disconnect sequence if the caller dials a valid emergency number. If a valid emergency number is dialed, the LSS will perform a disconnect sequence immediately. If off-hook is detected on a port other than Port 1, before an incoming call rings the LSS, the incoming call is connected to the port. If the LSS has detected ringing, or has already answered the incoming call, and any port other than Port 1 goes off-hook, the LSS will keep the talk path split for 4 seconds while it monitors for CNG tone or a DTMF string from the Polling Controller. If CNG or the expected DTMF transfer code is received, the call is handled as described previously in the Outgoing Calls from the LSS section. If a DTMF transfer code is not received, the call is routed to Port 1, and the off-hook port will be left connected to the local battery feed. No tones will be sent to the port , Rev. F Page 13

22 Line Sharing Switch Off-hook Timeout at the LSS Occasionally, a need to set a maximum off-hook time is required. The LSS allows either no limit or a programmable maximum time of up to 255 minutes per port. After an off-hook timeout timer expires, the device connected to the port will be sent a forced disconnect (COD) and the C.O. line will be placed on-hook. This off-hook timeout should be set to encompass the expected duration of any polling or other call. Privacy Timeout When Privacy Timeout is enabled, any port remaining off-hook without dialing or disconnecting properly, the LSS will connect the device to local battery feed and place the incoming central office line on-hook to enable other ports to receive calls. This lockout of an offending port occurs after first detecting at least five seconds of Central Office dial tone or two cycles of either busy or reorder tone during the first 15 seconds of off-hook, and no DTMF digits and 5 or fewer rotary breaks dialed in 60 seconds. If dial tone, busy, or reorder were not detected, or dialing was detected, the LSS will monitor for either a hook-flash or forced disconnect. If a hook-flash or forced disconnect is then detected, the LSS will re-start the privacy timeout period. No tones are sent to the off-hook phone. Incoming calls to other ports (transfer code received from the Polling Controller) are routed appropriately; calls to the off-hook privacy phone are given busy tone. If the port is returned to on-hook and then goes off-hook later, it will receive central office dial tone per normal operation. Page 14

23 Reference Manual Chapter 4: Teltone Default LSS Operation with Polling Controller Programming the LSS A number of operating parameters in the LSS can be adjusted by the customer. The programming options are listed in Table 2. The LSS is programmed using a DTMF telephone keypad, either locally or remotely. Command Format All commands start with and end with #. # is also used to separate the parts of the command. In general, the formats are as follows: <command># <command>#<x># <command>#<x>#<x># (no data entry) x = (single data field) x#x = (multiple data fields) Cancel Command To cancel the entire command, enter: in a command field. To abort the entire command, enter in a data field. If no data is entered in a field, that field is either cleared or set to zero. With enable/disable functions, an entry of 0 in the data field disables a feature; 1 enables it. Confirmation Tone When a command has been successfully entered, a confirmation tone (three short beeps) is returned to the user. Error Tone When a command has been entered incorrectly, an error tone (one long beep) is returned to the user. Programming Timeout Remember: the LSS will exit the programming mode and disconnect if 60 seconds elapse without entry of any DTMF digits. Using the LSS Programming Commands Table Table 2 outlines the commands and provides information about the valid entries and factory defaults. We have provided a column (Customer Settings) in which you can enter your selections as you program the unit. We suggest that you use the column as it can help you keep track of the unit s settings. Please make your entries in pencil, as you may wish to change them at a later date , Rev. F Page 15

24 Line Sharing Switch Command Table 2 LSS Programming Commands Function Description Valid entries (x=/y=/n=) Teltone Default Customer Settings (1) When entering a command, replace x and y with the desired variables. For example, to change the number of rings before disconnect from 12 to 10, enter 01#10#. To change the password to 1234, enter 03#1234#1234#. (2) Three short beeps following a command entry confirms that the command is accepted. One long beep indicates an error. Restore defaults: Resets unit to default settings, 00# 00# not Customer Defined Settings. THE COMMAND MUST BE ENTERED AS SHOWN. 01#x# Number of rings: Sets the number of times the LSS will ring any port before disconnecting #x# 03#x#x# 04#x# 05#x# 06#x# Remote programming: Enables or disables remote programming. Password: Sets the password for both local and remote programming. THE PASSWORD MUST BE ENTERED TWICE, AS SHOWN. Dial tone type: Determines the type of dial tone sent by the LSS to a user attempting emergency access. If 0 is selected, the user hears precise dial tone. If 1 is selected, the user hears stutter tone, indicating that the user has not reached central office dial tone. Privacy timeout: Enables or disables the privacy timeout feature. Fax routing: Determines the port to which the LSS directs a fax call when it receives a CNG signal. 09# Exit remote programming. 10#x# 20#x# 30#x# 40#x# 11#x# 21#x# 31#x# 41#x# 50#x# 51#y#x#x# 52#x#x# Off-hook timeout, Port 1: Limits the time allowed for a single call on Port 1. Off-hook timeout, Port 2: Limits the time allowed for a single call on Port 2. (All units) Off-hook timeout, Port 3: Limits the time allowed for a single call on Port 3. Off-hook timeout, Port 4: Limits the time allowed for a single call on Port 4. Audible ringback, Port 1: Enables or disables audible ringback with calls to Port 1. Audible ringback, Port 2: Enables or disables audible ringback with calls to Port 2. Audible ringback, Port 3: Enables or disables audible ringback with calls to Port 3. Audible ringback, Port 4: Enables or disables audible ringback with calls to Port 4. Priority type: Determines how competing users will be given access to the line. Emergency phone numbers: When emergency priority is enabled, this command sets the phone numbers to which a Port 1 user is allowed priority access when the line is in use. Up to 10 numbers can be programmed. y=1 through 10. x=phone number (up to 16 digits). THE PHONE NUMBER MUST BE ENTERED TWICE, AS SHOWN. Emergency Access Code: When emergency priority is enabled, this command sets the Access Code that a Port 1 user can enter to obtain access to the line in order to dial any number. THE ACCESS CODE MUST BE ENTERED TWICE, AS SHOWN. 0=disabled 1=enabled 3-10 digits, any DTMF digits except # 0=precise 1=stuttered 0=disabled 1=enabled 0=disabled 1-4=ports 1=enabled Teltone 0=precise 0=disabled (minutes) 0=disabled (minutes) 0=disabled (minutes) 0=disabled (minutes) 0=disabled 0=disabled 1=enabled 0=disabled 1=enabled 0=disabled 1=enabled 0=disabled 1=enabled 0=total priority 1=emergency 2=no priority y=1-10 x=phone number 2 0=disabled 0=disabled 0=disabled 0=disabled 2=no priority none 0-16 digits none Page 16

25 Reference Manual Chapter 4: Teltone Default LSS Operation with Polling Controller Command 70#x# 71#x# 72#x# 73#x# 07#n#x# 12#n#x# 22#n#x# 32#n#x# 42#n#x# Table 2 LSS Programming Commands Function Description Delay before routing: Number of seconds delayed before routing to default or disconnecting, if no default is set. Answer tone: When the LSS answers, a four-beep confirmation tone is sent, or four-seconds of dial tone are heard. Transfer code acknowledge: When a transfer code is sent, an acknowledge tone will indicate the type of code. (Use this command when working with the Polling Controller and LSS.) Select default port: Sets the default port to which calls will be routed when they lack a routing code. When working with the standalone LSS, this command can be sent without sending 72#x#. Transfer code for remote programming: Sets the transfer code for remote programming. Replace n with the number of digits, 0-4. If you enter 0 remote programming will be disabled. Valid digits for the transfer code include: 1-9, 0,, and #. (See Note 1) Transfer code for LSS Port 1: Sets the transfer code for Port 1 of the LSS. (See Note 1) Transfer code for LSS Port 2: Sets the transfer code for Port 2 of the LSS. (See Note 1) Transfer code for LSS Port 3: Sets the transfer code for Port 3 of the LSS. (See Note 1) Transfer code for LSS Port 4: Sets the transfer code for Port 4 of the LSS. (See Note 1) Valid entries (x=/y=/n=) Teltone Default x=4-30 seconds 4 0=disable 1=confirm 2=dial tone 0=none 1=modem answer tone 2=DTMF #B 0=no default port 1-4=port n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code See Note 2 and Table 3 See Note 2 and Table 3 Customer Settings Note 1: All transfer codes must have the same number of digits and must be unique. To program the codes, you can use any of the 12 DTMF digits (0-9, *, and #). Note 2: The Teltone Defaults are proprietary and unpublished and require the use of the Polling Controller, unless reprogrammed by the user. See routing codes *07 - *0, #7 in Table , Rev. F Page 17

26 Line Sharing Switch Routing Code (DTMF) for Proprietary Transfer Codes Table 3 Routing Codes for Polling Controller Transfer Code LSS port 07 Proprietary 1 08 Proprietary 2 09 Proprietary 3 0 Proprietary 4 #7 Proprietary Programming mode Routing Code (DTMF) for Programmable Transfer Codes Local Programming Transfer Code LSS port 01 Programmable 1 02 Programmable 2 03 Programmable 3 04 Programmable 4 #1 Programmable Programming mode If a telephone line is NOT connected to Jack A of the LSS: Connect a DTMF telephone to LSS Port 2. Go off-hook and dial ## within 15 seconds. (No password is required.) When you hear a confirmation tone (3 short beeps), begin programming. A telephone line must be connected to Jack A of the LSS: Connect a DTMF telephone to LSS Port 1 Go off-hook and dial ## within 15 seconds. Enter the password within 30 seconds (default #) When you hear a confirmation tone (3 short beeps), begin programming. Note: The unit will exit the programming mode and disconnect if 60 seconds elapse without entry of any DTMF digits. If an invalid password is entered, there will be no acknowledgment. The user must hang-up and wait for 30 seconds before attempting to re-enter the programming access mode. Example of a Local Programming Session Access Programming Mode (see previous section). Enter 21#0# to disable audible ringback on Port 2. When you hear 3 beeps, you may enter another command or exit programming mode. If you hear error tone, re-enter the command. Enter 50#1#to set emergency priority. Listen for 3 beeps. Enter 51#1#911#911#to enter the number 911 as the first emergency priority number. Listen for 3 beeps. Enter 51#2# # # to enter the number as the second emergency priority number. Listen for three beeps. Enter 02#1# to enable remote programming. Listen for 3 beeps. Hang-up the phone to exit the programming mode. Page 18

27 Reference Manual Chapter 4: Teltone Default LSS Operation with Polling Controller Remote Programming Remember: the LSS will exit the programming mode and disconnect if 60 seconds elapse without entry of any digits. Accessing the LSS through a Polling Controller If remote programming is enabled, you can access the LSS for programming using a Polling Controller, as well as a password. The Polling Controller instructs the LSS to answer without ringing any of the device ports. Proceed as follows: Example of a Remote Programming Session Connect a DTMF telephone to the auxiliary port of the modem connected to the Polling Controller, or unplug the modem connection to the Polling Controller and replace it with a DTMF telephone. Dial the number of the LSS to be programmed and append #7 immediately after the dialed number. When the LSS recognizes the programming transfer code, you will hear 3 beeps. Enter the password within 30 seconds. The default password is: # Note: Always terminate a password entry with #. When you hear a confirmation tone (3 short beeps), begin programming. If an invalid password is entered, there will be no acknowledgment of any kind. The user must hang up and wait for 30 seconds before attempting to re-enter the programming access mode. Caution:If three consecutive and invalid programming access attempts are made, the LSS will lock out all further access for 1 hour. You cannot disable the Remote Programming feature while in Remote Programming mode. Enter 50#1# to set emergency priority. When you hear 3 beeps, you may enter another command or exit programming mode. If you hear error tone, re-enter the command. Enter 51#1#911#911# to enter the number 911 as the first emergency priority number. Listen for three beeps. Enter 51#2# # # to enter the number 1(800) as the second emergency priority number. Listen for three beeps. Enter 03#8378#8378# to change the password to test (8378). Listen for 3 beeps. Enter 06#4# to change the fax routing to Port 4. Listen for 3 beeps. Enter 09# to exit programming mode. Listen for 3 beeps and hang up. Redial the unit and append #1 immediately. When the Polling Controller connects to the switch (you will hear a click and the LED changes modes), enter test# (8378#) within 30 seconds to check the new password. Listen for 3 beeps. Enter 09# to exit programming mode. Listen for 3 beeps and hang up , Rev. F Page 19

28 Line Sharing Switch Chapter 5: Standalone LSS Operation and Programming This chapter is used for M-39X-B-01 models only. The LSS can be used with or without the Polling Controller. In this Standalone mode, the modem or fax dialing string must be programmed to direct calls to assigned ports. (For example, in Figure 6, modem calls to the POS server would be sent to Port 3 and fax calls to Port 2.) The LSS can have two, three, or four ports. Example: A typical polling call from the host computer to a Standalone LSS would progress as described below. The host modem dials the polling call to access a modem on Port 3 of the remote LSS. The host modem dials: ,,,, 33 Note: The,,,, are pauses which must be included in the dial string to ensure that the LSS has time to answer before the transfer code, 33, is sent. (The number of pauses depends on the amount of time that the PSTN takes to ring the LSS and for the LSS to answer the call after the first ring.) The 33 assumes that you have programmed the LSS so that 33 is the code to transfer the call to Port 3. (The default transfer code for Standalone operation.) The LSS answers the call at the end of the first ring, then waits a programmable amount of time (four to 30 seconds, the default is 4 seconds) for a transfer code. If the LSS does not recognize a transfer code during the wait period, it rings the default port, usually Port 1. When the LSS recognizes the valid transfer code for Port 3, it sends an acknowledgment tone (a modem answer tone) to the calling modem and rings Port 3. Note: The modem answer tone is used in case a Polling Controller occasionally calls the LSS. (The tone removes the line split at the Polling Controller.) You can program the LSS so that no acknowledgment tone is sent, a modem answer tone is sent, (default), or a DTMF command, #B, is sent. If a Polling Controller will never be used to access the LSS, use the first option (i.e., no acknowledgment tone sent) using programming Command 72. At this point, the LSS has established a metallic path between the incoming telephone line and Port 3 for the data call; the calling and answering modems can now handshake properly. Example: An alternative method of making a data call to a Standalone LSS is described below. The host modem dials the polling call to access a modem on Port 3 of the remote LSS, by dialing: W,33 Note: The LSS can be programmed to answer incoming calls with either silence, which is the default, a three-beep confirmation tone, or four seconds of dial tone. The dial tone allows the host dial string to include a W indicating a wait for dial tone before proceeding. This avoids guesswork about the number of, pauses to put in the dial string. Unfortunately, people calling the LSS will also hear the dial tone and must be instructed to simply wait for the call to ring through to the attached telephone on Port 1. Page 20

29 Reference Manual Chapter 5: Standalone LSS Operation and Programming Programming Transfer Codes The Polling Controller sends transfer codes to the LSS indicating the port to which calls should be routed. Calls also can be manually routed to any of the ports using a one- to four-digit transfer code. Remote programming is also accessed through transfer codes. Each code can be a maximum of four digits in length and can contain any of the 12 DTMF digits. No Default Port Use this feature in applications where all of the devices connected to the LSS are used for polling, including Port 1. This feature can program the LSS not to route calls lacking transfer codes to Port 1. You have the option of disconnecting the call or routing it to another port. Remote Programming A password-protected remote programming capability is provided. When Remote Programming is enabled (default enabled) at the LSS, options can be programmed a DTMF telephone from a remote site. The default password can be changed from the remote location using a DTMF telephone. Loss of Power at the LSS Figure 5 Standalone Line Sharing Switch During a power failure, telephones connected to Port 1 can receive and place calls. No other features of the LSS are available. Existing Port 1 connections will not be interrupted by power failure or restoration. Port Access Priority at the LSS There are certain conditions under which a caller making a priority interrupt at the LSS may not be able to immediately obtain central office dial tone which enables the priority call to be processed by the telephone network. The user will experience a dial tone delay , Rev. F Page 21

30 Line Sharing Switch and/or receive a busy signal to indicate that she/he should redial in these instances. You can establish one of three types of priority which will determine how competing users at the LSS are given access to the line. This is determined by a programming command, as described in Chapter 4. The priority modes are: If Total Priority Mode is enabled, Port 1 (normally a telephone) is given immediate access to the line whenever the phone goes off-hook. If another port is using the line (for example, data transfer is taking place), the modem is halted and the line made free for the telephone user. Port 2 also has priority access over Ports 3 and 4, but not over Port 1; Port 3 has priority access over Port 4, but not over Ports 1 and 2. If Emergency Priority Mode is enabled, a Port 1 user is given priority when one of the programmed emergency numbers is dialed. The LSS can be programmed to allow up to ten 16-digit numbers. An Access Code can also be programmed to provide emergency line access to allow any number to be dialed. In this mode, Port 2 has total priority over Ports 3 and 4. This arrangement allows time-sensitive credit card verification calls on equipment connected to Port 2 to take priority over other calls. Caution: If the LSS is receiving an incoming fax when you go off-hook in either Total Priority Mode or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the sending fax disconnects or the PSTN times out (usually within seconds). If No Priority Mode is enabled, no port can access the line when another port is using it. Calling Party Supervision The U.S. telephone network typically uses Calling Party Supervision. This means that even though the called party hangs up, they may be reconnected to the calling party when their phone is taken off-hook again. The calling party must hang up in order for the called party to be fully disconnected and initiate a new call. The telephone network will time out and automatically disconnect the call within 5-20 seconds, depending on network design. This will allow the called party to get dial tone when they go off-hook again. To circumvent this problem, when the LSS senses a priority interrupt it immediately signals the Polling Controller to disconnect the original polling call. Standalone users will not have the benefit of the handshake and disconnect. If priority access to dial tone is important, it is recommended that a Polling Controller be used. (See ordering information in Appendix 2.) This procedure ensures that the user initiating the priority will have access to network dial tone to complete the priority call. If for any reason the interrupted call cannot be properly terminated within approximately 5 seconds, a line busy tone is returned to the priority caller. The caller should then hang up for a few seconds before trying the call again. Outgoing Calls from the LSS The LSS allows DTMF and rotary dialing on outgoing calls. Telephone Calls Modem or Other Device Idle When the LSS is idle, local telephones are connected to a local battery feed. When a phone goes off-hook, it is switched to the central office line to obtain dial tone. When the phone goes on-hook, the line is switched back to a local battery feed. Page 22

31 Reference Manual Chapter 5: Standalone LSS Operation and Programming Telephone Calls Modem Active If in Total Priority Mode, and the modem is active, a priority port going off-hook remains connected to the local battery feed while the LSS disengages the active port. To do this, the LSS forces the modem on-hook (terminating the modem carrier), then sends a disconnect command to the Polling Controller and receives acknowledgment that the Polling Controller has gone on-hook, then goes on-hook towards the central office to obtain a new dial tone for the calling party. Because a Polling Controller may not be used in the Standalone mode, a longer delay will occur before Central Office dial tone is seen by the user. If in Emergency Priority Mode, and the telephone at Port 1 goes off-hook, it receives dial tone (generated internally by the LSS). Dialed digits are monitored. If the dialed phone number does not match the allowed numbers, the existing connection through the LSS is not interrupted and busy tone is returned to the telephone user. If, however, the dialed number matches a programmed emergency phone number, data transfer is halted and the line made free for the telephone user. The LSS then dials the number and connects you to the central office line. If you enter the special Access Code, the LSS will connect you to the central office line; when you receive dial tone, dial any number. Caution: If the LSS is receiving an incoming fax when you go off-hook in either Total Priority Mode or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the sending fax disconnects or the PSTN times out (usually within seconds). If in No Priority Mode, the modem or other device remains active and the line is not assigned to another port. If the LSS receives no response from the Polling Controller after three disconnect commands are transmitted, which is the normal operation in the Standalone mode, the LSS goes on-hook toward the central office for several seconds to obtain a new dial tone for the calling party. Privacy Timeout will not be invoked unless enabled by the user. Read the Privacy Timeout section later in this chapter for more details. Any priority disconnection delay during a polling call will be minimized if the polling modem Loss of Carrier disconnect time delay is set to a minimum acceptable duration. This duration is called the Modem Disconnect on Loss of Carrier. Incoming Calls to the LSS When the LSS is idle, the incoming central office line is disconnected from the internal phone line. The LSS answers all calls at the end of the first ring period. It then monitors for a routing code. If no code is received by the LSS within 4 seconds after answer, ringing voltage is sent to the programmed default port and audible ringback is sent to the calling party. If the telephone is not answered in 1 to 30 rings (default programmed to 12 rings) or a Forced Disconnect is received from the central office, the LSS terminates ringing and goes on-hook toward the central office. If a transfer code is received, the LSS sends ringing voltage to the appropriate port. The LSS also generates a modem answer tone toward the Polling Host Site, signaling call progress. When the local modem answers, the LSS connects the local modem to the central office lines. Interrupted Incoming Call at the LSS If a phone goes off-hook on Port 1 before an incoming call has been connected to a port, , Rev. F Page 23

32 Line Sharing Switch the LSS connects Port 1 to the incoming call, and monitors for a DTMF transfer code from the host site Polling Controller. If a DTMF transfer code is received, the LSS will split the line. What happens next depends on which priority interrupt mode has been programmed. If the LSS is programmed for No Priority, the call will be routed to the appropriate port, and Port 1 will receive busy tone. If in Total Priority Mode, the LSS will perform a disconnect sequence as described previously, and then connect the central office line to Port 1. If in Emergency Priority Mode, the LSS will provide dial tone to Port 1, and the user must dial one of the programmed emergency numbers to gain access to the central office line. The LSS will not route the incoming call to the port selected by the transfer code until either the caller is denied access due to dialing an invalid number, or 5 seconds after the last digit dialed. This design will prevent any modem carrier from interfering with a disconnect sequence if the caller dials a valid emergency number. If a valid emergency number is dialed, the LSS will perform a disconnect sequence immediately. If off-hook is detected on a port other than Port 1, before an incoming call rings the LSS, the incoming call is connected to the port. If the LSS has detected ringing, or has already answered the incoming call, and any port other than Port 1 goes off-hook, the LSS will keep the talk path split for 4 seconds while it monitors for CNG tone or a DTMF string from the Polling site. If CNG or the expected DTMF transfer code is received, the call is handled as described previously in the Outgoing Calls from the LSS section. If a DTMF transfer code is not received, the call is routed to Port 1, and the off-hook port will be left connected to the local battery feed. No tones will be sent to the port. Off-hook Timeout at the LSS Occasionally, a need to set a maximum off-hook time is required. The LSS allows either no limit or a programmable maximum time of up to 255 minutes per port. After an off-hook timeout timer expires, the device connected to the port will be sent a forced disconnect (COD) and the C.O. line will be placed on-hook. This off-hook timeout should be set to encompass the expected duration of any polling or other call. Privacy Timeout When Privacy Timeout is enabled, any port remaining off-hook without dialing or disconnecting properly, the LSS will connect the device to local battery feed and place the incoming central office line on-hook to enable other ports to receive calls. This lockout of an offending port occurs after first detecting at least five seconds of Central Office dial tone or two cycles of either busy or reorder tone during the first 15 seconds of off-hook, and no DTMF digits and 5 or fewer rotary breaks dialed in 60 seconds. If dial tone, busy, or reorder were not detected, or dialing was detected, the LSS will monitor for either a hook-flash or forced disconnect. If a hook-flash or forced disconnect is then detected, the LSS will re-start the privacy timeout period. No tones are sent to the off-hook phone. Incoming calls to other ports (transfer code received from the Polling Controller) are routed appropriately; calls to the off-hook privacy phone are given busy tone. If the port is returned to on-hook and then goes off-hook later, it will receive Central Office dial tone per normal operation. A number of operating parameters in the LSS can be adjusted by the customer. The programming options are listed in Table 2. The LSS is programmed using a DTMF Page 24

33 Reference Manual Chapter 5: Standalone LSS Operation and Programming telephone keypad, either locally or remotely. Command Format All commands start with and end with #. # is also used to separate the parts of the command. In general, the formats are as follows: <command># <command>#<x># <command>#<x>#<x># (no data entry) x = (single data field) x#x = (multiple data fields) Cancel Command To cancel the entire command, enter: in a command field. To abort the entire command, enter in a data field. If no data is entered in a field, that field is either cleared or set to zero. With enable/disable functions, an entry of 0 in the data field disables a feature; 1 enables it. Confirmation Tone When a command has been successfully entered, a confirmation tone (three short beeps) is returned to the user. Error Tone When a command has been entered incorrectly, an error tone (one long beep) is returned to the user. Programming Timeout Remember: the LSS will exit the programming mode and disconnect if 60 seconds elapse without entry of any DTMF digits. Using the LSS Programming Commands Table Table 4 outlines the commands and provides information about the valid entries and Standalone defaults. We have provided a column (Customer Settings) in which you can enter your selections as you program the unit. We suggest that you use the column as it can help you keep track of the unit s settings. Please make your entries in pencil or make a copy of the table, as you may wish to change them at a later date , Rev. F Page 25

34 Line Sharing Switch Command Table 4 LSS Programming Commands Function Description Valid entries (x=/y=/n=) Standalone Default Customer Settings (1) When entering a command, replace x and y with the desired variables. For example, to change the number of rings before disconnect from 12 to 10, enter 01#10#. To change the password to 1234, enter 03#1234#1234#. (2) Three short beeps following a command entry confirms that the command is accepted. One long beep indicates an error. Restore defaults: Resets unit to default settings, 00# 00# not Customer Defined Settings. THE COMMAND MUST BE ENTERED AS SHOWN. 01#x# Number of rings: Sets the number of times the LSS will ring any port before disconnecting #x# 03#x#x# 04#x# 05#x# 06#x# Remote programming: Enables or disables remote programming. Password: Sets the password for both local and remote programming. THE PASSWORD MUST BE ENTERED TWICE, AS SHOWN. Dial tone type: Determines the type of dial tone sent by the LSS to a user attempting emergency access. If 0 is selected, the user hears precise dial tone. If 1 is selected, the user hears stutter tone, indicating that she/he has not reached central office dial tone. Privacy timeout: Enables or disables the privacy timeout feature. Fax routing: Determines the port to which the LSS directs a fax call when it receives a CNG signal. 09# Exit remote programming. 10#x# 20#x# 30#x# 40#x# 11#x# 21#x# 31#x# 41#x# 50#x# 51#y#x#x# 52#x#x# Off-hook timeout, Port 1: Limits the time allowed for a single call on Port 1. (All units) Off-hook timeout, Port 2: Limits the time allowed for a single call on Port 2. (All units) Off-hook timeout, Port 3: Limits the time allowed for a single call on Port 3. (M-393-A/B and M-394-A/B only) Off-hook timeout, Port 4: Limits the time allowed for a single call on Port 4. Audible ringback, Port 1: Enables or disables audible ringback with calls to Port 1. Audible ringback, Port 2: Enables or disables audible ringback with calls to Port 2. Audible ringback, Port 3: Enables or disables audible ringback with calls to Port 3. Audible ringback, Port 4: Enables or disables audible ringback with calls to Port 4. Priority type: Determines how competing users will be given access to the line. Emergency phone numbers: When emergency priority is enabled, this command sets the phone numbers to which a Port 1 user is allowed priority access when the line is in use. Up to 10 numbers can be programmed. y=1 through 10. x=phone number (up to 16 digits). THE PHONE NUMBER MUST BE ENTERED TWICE, AS SHOWN. Emergency Access Code: When emergency priority is enabled, this command sets the Access Code that a Port 1 user can enter to obtain access to the line in order to dial any number. THE ACCESS CODE MUST BE ENTERED TWICE, AS SHOWN. 0=disabled 1=enabled 3-10 digits, any DTMF digits except # 0=precise 1=stuttered 0=disabled 1=enabled 0=disabled 1-4=ports 1=enabled Teltone 0=precise 1=enabled 0=disabled (minutes) 0=disabled (minutes) 0=disabled (minutes) 0=disabled (minutes) 0=disabled 0=disabled 1=enabled 0=disabled 1=enabled 0=disabled 1=enabled 0=disabled 1=enabled 0=total priority 1=emergency 2=no priority y=1-10 x=phone number 1=enabled 1=enabled 1=enabled 1=enabled 0=total priority none 0-16 digits none Page 26

35 Reference Manual Chapter 5: Standalone LSS Operation and Programming Command 70#x# 71#x# 72#x# 73#x# 07#n#x# 12#n#x# 22#n#x# 32#n#x# 42#n#x# Table 4 LSS Programming Commands Function Description Delay before routing: Number of seconds delayed before routing to default or disconnecting, if no default is set. Answer tone: When the LSS answers, a four-beep confirmation tone is sent, or four-seconds of dial tone are heard. Transfer code acknowledge: When a transfer code is sent, an acknowledge tone will indicate the type of code. (Use this command when working with the Polling Controller and LSS.) Select default port: Sets the default port to which calls will be routed when they lack a routing code. When working with the standalone LSS, this command can be sent without sending 72#x#. Transfer code for remote programming: Sets the transfer code for remote programming. Replace n with the number of digits, 0-4. If you enter 0, remote programming will be disabled. Valid digits for the transfer code include: 1-9, 0,, and #. (Note 1) Transfer code for LSS Port 1: Sets the transfer code for Port 1 of the LSS. (See Note 1) Transfer code for LSS Port 2: Sets the transfer code for Port 2 of the LSS. (See Note 1) Transfer code for LSS Port 3: Sets the transfer code for Port 3 of the LSS. (See Note 1) Transfer code for LSS Port 4: Sets the transfer code for Port 4 of the LSS. (See Note 1) Valid entries (x=/y=/n=) Standalone Default x=4-30 seconds 4 0=disable 1=confirm. 2=dial tone 0=none 1=modem answer tone 2=DTMF #B 0=no default port 1-4=port n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code n= 0-4 x=transfer code # Customer Settings Note 1 All transfer codes must have the same number of digits and must be unique. To program the codes, you can use any of the 12 DTMF digits (0-9,, and #) , Rev. F Page 27

36 Line Sharing Switch Local Programming If the telephone line is NOT connected to Jack A of the LSS: Connect a DTMF telephone to LSS Port 2. Go off-hook and dial ## within 15 seconds. (No password is required.) When you hear a confirmation tone (3 short beeps), begin programming. A telephone line must be connected to the LSS: Connect a DTMF telephone to Jack A of the LSS Port 1 Go off-hook and dial ## within 15 seconds. Enter the password within 30 seconds (default # or Teltone ). When you hear a confirmation tone (3 short beeps), begin programming. Note: The unit will exit the programming mode and disconnect if 60 seconds elapse without entry of any DTMF digits. If an invalid password is entered, there will be no acknowledgment. The user must hang-up and wait for 30 seconds before attempting to re-enter the programming access mode. Example of a Local Programming Session Access Programming Mode (see previous section). Enter 21#0# to disable audible ringback on Port 2. When you hear 3 beeps, you may enter another command or exit programming mode. If you hear error tone, re-enter the command. Enter 50#1# to set emergency priority. Listen for 3 beeps. Enter 51#1#911#911# to enter the number 911 as the first emergency priority number. Listen for 3 beeps. Enter 51#2# # # to enter the number as the second emergency priority number. Listen for three beeps. Enter 02#1# to enable Remote P. Listen for 3 beeps. Hang-up the phone to exit the programming mode. Page 28

37 Reference Manual Chapter 5: Standalone LSS Operation and Programming Remote Programming Remember: the LSS will exit the programming mode and disconnect if 60 seconds elapse without entry of any DTMF digits. Example of a Remote Programming Session Dial the number of the LSS to be programmed and append #1 immediately after hearing the first ring. The LSS will respond with a short modem answer burst (default) and then three beeps. Enter the password within 30 seconds. The default password is: # If the LSS accepts this entry as a valid password, it will issue three beeps. You can begin programming. Note: Always terminate a password entry with #. If an invalid password is entered, there will be no acknowledgment of any kind. The user must hang up and wait for 30 seconds before attempting to re-enter the programming access mode. Caution: If three consecutive and invalid programming access attempts are made, the LSS will lock out all further access for 1 hour. You cannot disable the Remote Programming feature while in remote programming mode. Example of a Programming Command Sequence Enter 50#1# to set emergency priority. When you hear 3 beeps, you may enter another command or exit programming mode. If you hear error tone, re-enter the command. Enter 51#1#911#911# to enter the number 911 as the first emergency priority number. Listen for three beeps. Enter 51#2# # # to enter the number 1(800) as the second emergency priority number. Listen for three beeps. Enter 03#8378#8378# to change the password to test (8378). Listen for 3 beeps. Enter 06#4# to change the fax routing to Port 4. Listen for 3 beeps. Enter 09# to exit programming mode. Listen for 3 beeps and hang up. Redial the unit and append #1 immediately after hearing the first ring. When the Polling Controller connects to the switch (you will hear a click and the LED changes modes), enter test# (8378#) within 30 seconds to check the new password. Listen for 3 beeps. Enter 09# to exit programming mode. Listen for 3 beeps and hang up. Hang up when Transfer Code Absent To Hang up the LSS if no transfer code is entered, send ## before the timeout period has elapsed. This function may be useful for telephone callers wanting to avoid extended ringing at the LSS , Rev. F Page 29

38 Line Sharing Switch Chapter 6: Advanced Applications Cascade operation is linking a series of LSS units together through Port 1 and/or other ports. In this type of operation, the LSS is capable of supporting much more than the normal 4 ports. Two typical applications are described in this chapter. The first is a distributed application using Standalone operation, and the second is a daisy-chain configuration using Teltone Default operation. Cascaded units operate just as they would normally, with one exception: Priority operation via Port 1 must always be connected from port 1 of the primary LSS to the Jack A input of the cascaded LSS, see Figure 7. Other ports can be used to connect any other device that would normally be used with a LSS (e.g., modems). Access to the ports of cascaded units is also slightly different from standard operation. A standard example for accessing port 3 would be by dialing the telephone number of the line connected to the C.O. port, and then entering 33 after the first ring. In a cascade configuration, a delay would be placed after the first port access code, followed by the port access code of the LSS next in line. For example, a modem dial string would be as follows: ATDT ,,,,33,,44 This would route a caller through port 3 of the primary LSS and to port 4 of the secondary LSS in cascade. Cascade Features All features are available in Cascade operation; however, the function of priority modes (Total and No Priority) is slightly different. Figure 6 LSS Typical Cascade Application Page 30

39 Reference Manual Chapter 6: Advanced Applications For the following explanation, assume that three LSS units are being cascaded as indicated in the illustration. If you assign No Priority (default) to all LSS units, equal access is given to the Central Office line for all ports. If you assign Total Priority to the first LSS unit and the LSS connected to Port 1, devices connected to ports on the first and second LSS will be disconnected if Port 1 goes off-hook. Caution: If one of the LSS ports is in use when you go off-hook in Total Priority mode, the LSS will be unable to obtain network dial tone until the call disconnects or until the times out (usually within seconds). If you assign No Priority to any of the LSS units, calls will never be interrupted. This setting is not advised for applications requiring a telephone in emergency situations. Programming for Cascaded LSS Units Cascaded LSS units can be programmed either locally or remotely. Follow the instructions in the programming chapter to program the units locally. Remote Programming would be accessed using the following example. A modem dial string would be: ATDT ,,,,33,,#1 This would route a caller through port 3 of the primary LSS and access remote programming for the LSS connected to port 3 in cascade. Follow the instructions in the programming chapter to program settings for the features you will use. Daisy-chain Operation Daisy-chaining is linking a series of LSS units together through Port 1. In this type of operation, the LSS units and the Polling Controller work together to route calls. If you are daisy-chaining the M-394-A/B, the four-port model, up to five LSS units can be daisy-chained; giving a total of 16 ports. Daisy-chained units operate just as they would normally, with one exception: Port 1 of the first LSS is always used to connect to the next LSS through its CO Line port. The last LSS in the chain can use Port 1 to connect to an emergency telephone. Other ports can be used to connect any other device that would normally be used with a LSS (e.g., modems, fax machines, etc.). Daisy-chain Features All features are available in D operation with a Polling Controller; however, the function of priority modes (Emergency, Total, and No Priority) is slightly different. Note: For information on changing the proprietary defaults for transfer codes in daisy-chain applications, refer to the tables in Chapter 4. For the following explanation, assume that three LSS units are being daisy-chained as indicated in Figure , Rev. F Page 31

40 Line Sharing Switch In order to use Emergency Priority, program the last LSS in the chain for Emergency Priority and all others for Total Priority. The last LSS in the chain will have priority over all others in the chain. When an emergency call is made, the Total Priority mode of other units up the chain will cause any call in progress to be terminated. As soon as dial tone is received from the PSTN, the emergency call will be processed. If you assign Total Priority to all LSS units in the chain, devices connected to ports on the first and second LSS will be disconnected if any port on the last LSS goes off-hook. Caution: If one of the LSS ports is in use when you go off-hook in either Total or Emergency Priority Mode, the LSS will be unable to obtain network dial tone until the call disconnects or until the times out (usually within seconds). If you assign No Priority to any of the LSS units, calls will never be interrupted. This setting is not advised for applications requiring a telephone in emergency situations. Figure 7 Daisy-chain LSS Application Programming for Daisy-chained LSS Units Daisy-chained LSS units can be programmed either locally or remotely. After carefully completing this section, follow the instructions in Chapter 4 or 5 to program the units. Refer to the Table 5 for programming D applications. Note: For reference only, Unit 1 is the first LSS in the daisy-chain, Unit 2 is the second, etc. Page 32

41 Reference Manual Chapter 6: Advanced Applications Table 5 Routing Codes Routing Code Transfer Code LSS Port 01 Unit 1 Port 2 02 Unit 1 Port 3 03 Unit 1 Port 4 04 Unit 2 Port 2 05 Unit 2 Port 3 06 Unit 2 Port 4 07 Unit 3 Port 2 08 Unit 3 Port 3 09 Unit 3 Port 4 10 Unit 4 Port 2 11 Unit 4 Port 3 12 Unit 4 Port 4 13 Unit 5 Port 1 14 Unit 5 Port 2 15 Unit 5 Port 3 16 Unit 5 Port 4 When assigning transfer codes for remote programming or for ports, all codes must be unique and must have the same number of digits. Select a port on one of the daisy-chained LSS units. Choose the routing codes ( 01-16) that you want associated with that port. Assign a unique transfer code to that port. Fill in the table on the next page by assigning the transfer codes to units and ports. Daisy-chain Remote Programming If you are going to use remote programming in a daisy-chain, follow the steps below to configure the LSS units. Using 07#n#x#, the Transfer Code for Remote Programming command, assign a different remote programming transfer code to each LSS in the daisy-chain. For your reference, enter the unit number of the LSS in the last column of Table 6. When assigning transfer codes for remote programming, all codes must be unique and must have the same number of digits. Table 6 Remote Programming Daisy-chained LSS Units Transfer Code for Remote Programming Remote Programming Code LSS to be Programmed #1 1 #2 2 #3 3 #4 4 #7 PROPRIETARY , Rev. F Page 33

42 Line Sharing Switch After completing the table above, program this information into the Polling Controller, if you are using one, then into the LSS. (Programming instructions for the Polling Controller are provided in Reference Manual ) The Example: Table 6... is complete with Remote Programming Codes and the number of each LSS in the daisy-chain. As indicated in the table, the Remote Programming Code for the third LSS is #3. Example: Table 6 Remote Programming Daisy-chained LSS Units Transfer Code for Remote Programming Remote Programming Code LSS to be Programmed #1 #1 1 #2 #2 2 #3 #3 3 #4 #4 4 #7 PROPRIETARY 5 Set the Remote Programming Code for each LSS with the appropriate transfer code using the information you entered in the table, above. Following the example in Table 6, you would program the two-digit code for the third LSS, by entering: 07#2##3# After you have programmed each LSS with a Remote Programming Code, follow the instructions in Chapter 4 to program settings for the features you will use. Alternate Telephone Connection Note: Jack B is available only on M-392-A/B and M-393-A/B LSS units. Installation Using Jack B: Use Jack B to ensure that the LSS is the first device on the line. Installing the LSS as the first device forces all calls to be processed through it before they are sent to other extensions. To do this, the protector block wiring must be modified, most likely on a block wired after the protector. The incoming tip/ring pair is moved from the first tip/ring pair (T1/R1) to the second tip/ring pair (T2/R2). The incoming line appears on Pins 2 and 5 of modular jacks. The Telephone Line pair are connected to Pins 3 and 4. The LSS will route the calls it receives from Pins 2 and 5 to other phones on Pins 3 and 4. Refer to Figure 9. Page 34

43 Reference Manual Chapter 6: Advanced Applications Figure 8 Installation Using Jack B , Rev. F Page 35

44 Line Sharing Switch Chapter 7: Warranty, Troubleshooting, and Technical Support Warranty Information Teltone warrants this product to be free from defects in material and workmanship for a period of 30 months, given proper installation and usage. At its sole discretion, Teltone will repair or replace free of charge any unit found to be defective during the warranty period. Units found defective beyond the warranty period will be repaired or replaced at a flat rate. Troubleshooting Verify the incoming telephone line is active. Plug a test set into the line and verify dial tone is heard when taken off-hook. Verify the correct line is connected. Have someone place a call to the line in question and verify the telephone device rings. Verify that power is connected and the Green LED is blinking mid-full brightness. Verify that all connections are secure and have been tested. Verify that the proper LSS has been ordered, - if your LSS has an &5 or -02 suffix, you should be using a Polling Controller. If your LSS has an &4 or -01 suffix, verify transfer codes are correct. Transformer Faulty? Check the pause duration in the dial string before sending the transfer code. (Standalone.) Too short or too long a duration will fail to transfer a call properly. Check Incoming Line Polarity - Incorrect line polarity can degrade the performance of the LSS and may cause problems with certain modems. To avoid this problem and maximize performance of the LSS, Teltone recommends use of a line polarity tester. Fax Routing Problems? The incoming fax may be sent manually - consequently no answer tone is heard by the caller, no CNG tone is seen by the LSS, and the call is transferred to the default port - Port 1. Option 1 - change the default port to Port 2. Port 1 is still allowed to make outgoing calls - incoming calls are sent to the fax machine. Option 2 - instruct the callers to hit start on their fax machine after dialing the number. Technical Support For technical assistance on this product, call Teltone technical support at or send an to [email protected]. The telephone company may ask you to disconnect a suspect unit from the network until the problem has been corrected or until you are sure the unit is not malfunctioning. Page 36

45 Reference Manual Chapter 7: Warranty, Troubleshooting, and Technical Support Return Procedures If a unit is found to be defective, contact Teltone customer service to obtain a RMA (Return Material Authorization) number and shipping instructions. When returning units, provide the following information: Unit model number, unit part number, and serial number (obtained from the Unit ID label on the bottom of the unit). Teltone RMA number All available fault information Complete shipping and billing address Repair purchase order History Old Part Number New Part Number Programmed M-392-A&4 M-392-B-01 Standalone Configuration M-392-A&5 M-392-B-02 Teltone Factory Default M-393-A&4 M-393-B-01 Standalone Configuration M-393-A&5 M-393-B-02 Teltone Factory Default M-394-A&4 M-394-B-01 Standalone Configuration M-394-A&5 M-394-B-02 Teltone Factory Default M-39XB-01/02 now supports a hardware modification to improve the ringing circuitry , Rev. F Page 37

46 Line Sharing Switch Appendix 1: Specifications M-392-A/B, M-393-A/B, and M-394-A/B Line Sharing Switches Power Requirements Environmental Requirements Versions or higher Operating Temperature Storage Temperature Versions or lower Operating Temperature Storage Temperature Humidity Incoming Line Ring Detect Frequency Voltage Ringer Equivalence Incoming Loop Hold Circuit Local Ring Generator Ringing frequency DTMF Receiver Parameters Jack A Receive level Receive timing Port 1-4 Receive level 20 VDC DC Input 34 VDC. Maximum current draw = 500 ma UL/CSA-recognized supply included with unit. 24 VDC, 120 VAC ± 10 %, 60 Hz, 0.2 A max. No internal fusing required. -20 C to +60 C -40 C to +70 C (upper limit up to 3 days) 0 C to +50 C -40 C to +60 C (upper limit up to 3 days) 90% maximum non-condensing, relative Ring trips within 200 ms after end of first ring cycle. 5 to 68 Hz 50 VRMS min 2.0B Max DC resistance of approximately 240 ohms. 50 VRMS minimum at 5 ringer equivalence Rounded square wave output at 20 Hz 2.0 S on/4.0 S off ± 10% -10 to -40 dbm 40 ms min +10 to -20 dbm Loop Current On-Hook/Off-Hook Detection Unit detects off-hook when loop current is 20 ma. Unit detects on-hook when loop current is 5 ma. Forced Disconnect Recognition < 350 ms ± 50 ms Port 1-4 Rotary Signaling Detection % Break Interdigit Time Jack A - Rotary Dialing Parameters Rate Interdigit time Local Battery Feed On-hook voltage Off-hook local battery (short circuit loop current) Call Progress Tone Characteristics Jack A transmit level Port 1-4 transmit level Ringback Tone Busy Tone Dial Tone Stuttered Dial Tone Fast Busy Tone CNG Tone detection (Fax Port) receive level Confirmation Tone Watchdog Timer/Low Supply Voltage Detector Indicator Lights Dimensions/Weight 8-22 pps 40% to 80% 300 ms min 10 pps 60% break 740 ms ± 5mS volts DC. 30 ma maximum -10 ± 3 dbm (combined) into 900Ω -18 ± 3 dbm (combined) into 900Ω Hz 2.0 S on/4.0 S off Hz, 500 ms on/500 ms off Hz continuous 1 S delay, 3 bursts 100 ms on/off then continuous 970 Hz ± 10%, 250 ms on/250 ms off 1100 Hz ± 100 Hz -10 to -45 dbm 2125 ± 25 Hz, -13 dbm into 900Ω Provided in unit. If the microcontroller does not toggle the watchdog timer for 150 ms, the microcontroller is reset. When on-card 5 volt supply is 4.5 volts, the controller is held reset. Normal phone service is not affected by reset and exit from reset conditions. Green power and status indicator. 1.50" H x 5.50"W x 9.00"D, 1 lb. 8 oz. Page 38

47 Reference Manual Appendix 1: Specifications Regulatory Compliance Safety EMC Telecom United States UL 1459 Canada CSA C22.2 No. 225-M90 United States FCC Part 15, Class B United States FCC Part 68 Certification Number: AHHUSA KX-N Canada Industry Canada CS-03 Registration Number: A FCC and Industry Canada REN 1.2B , Rev. F Page 39

48 Line Sharing Switch Appendix 2: Ordering Information M-390-A-04 M-392-B-01 M-392-B-02 M-394-B-01 M-394-B-02 PS-24DC-01 UM Polling Controller. Includes technical manual Order separately either PS-24DC-01 power transformer with cord (one per unit) or UM rack mount shelf (one for each eight units). Two-port Line Sharing Switch. Includes technical manual Enables two devices to share one telephone line. Includes AC transformer with cord (PS-24DC-01). Order -01 if previously ordered &4, -02 if &5. Four-port Line Sharing Switch. Includes technical manual Enables four devices to share one telephone line. Includes AC transformer with cord (PS-24DC-01). Order -01 if previously ordered &4, -02 if &5. Power transformer and cord. Converts 120 VAC wall power to 24 VDC. Required for use with M-390-A unless UM is used. One included with each LSS unit. Strap for wall mounting one Line Sharing Switch unit (optional). CA-7F 7 ft. Modular Telephone Cord (optional) CA-25F 25 ft. Modular Telephone Cord (optional) Spare copy of this manual Spare copy of the Polling Controller manual Page 40

49 Reference Manual Appendix 3: Glossary Appendix 3: Glossary Many of the terms in this glossary were defined with the assistance of Newton s Telecom Dictionary, by Harry Newton. To order a copy, call LIBRARY or write to: Telecom Library Inc., 12 West 21 Street, New York, New York set The standard single-line touch-tone desk telephone. Abbreviated dialing A feature of telephone systems that allows a caller to dial one or two digits to place a call. The system translates the digits to the actual number being called. Also known as speed dialing. Busy Tone A signal generated by the central office indicating that the line you are calling is busy. Call Progress Tone A tone sent from the switch to tell the caller of the progress of the call. Examples are audible ringing, re-order, busy, timing, etc. Central Office Telephone company facility where subscriber s lines are joined to switching equipment for connecting other subscribers to each other, locally and long distance. (Also called CO.) Centrex Business telephone service offered by a local telephone company from a local central office. Centrex is leased to businesses as a substitute for a business-owned PBX or key telephone system. CNG A calling tone issued by a fax device to inform a terminating point that the incoming call is from a facsimile machine. C.O.D Cutoff On Disconnect. This signal, a momentary break of greater that 800mS, is issued by the Central Office Switching Equipment to attempt a Forced Disconnect. db A decibel is a unit of measure of signal strength. DTMF Dual-tone multi-frequency. Push-button telephone signaling. When you touch a button on a push-button pad, it makes a tone, actually a combination of two tones, one high-frequency and one low-frequency. Factory default A setting programmed by Teltone. You can change this value with one of the programming commands. If necessary, you can use the Restore Defaults command to return to factory defaults. Forced disconnect Method used by the telephone company to clear a line. When the called party goes on-hook, the central office returns an open (that is, drops loop current) of at least 800 ms to the calling party. This is also known as Calling Party Control (CPC), or Cutoff on Disconnect (COD). Ground start One of two types of switched trunks (outside lines) typically leased from telephone companies, the other type being loop start. A ground start trunk initiates an outgoing trunk seizure by applying a local resistance up to 550 ohms from ground to the tip conductor. Hacker A person who tries to break into computer or telephone systems, usually by a series of trial-and-error attempts to break the password , Rev. F Page 41

50 Line Sharing Switch Key telephone system A telephone system in which the telephones have multiple buttons that permit a user to select outgoing or incoming central office phone lines directly. LED or light Light-emitting diode. A semiconductor diode that emits light when a current is passed through it. Used for status and information displays on electronic devices. Loop start One of two types of switched trunks (outside lines) typically leased from telephone companies, the other type being ground start. A loop start trunk is seized by connecting a low resistance between the tip and ring (both wires) of the telephone line. If you need to find out if a line is loop start, call your telephone company. Off-hook The telephone is in an off-hook state when the handset is removed from the cradle. A modem or other device is off-hook when it answers a call or when it seizes a line to initiate a call. Public Switched Telephone Network (PSTN) Usually refers to the worldwide telephone network accessible to all those with telephones and access privileges (i.e., in the U.S., it was formerly called the Bell System network or the AT&T long-distance network.) Remote At a location physically removed from the equipment in question, that is, a computer or PBX system that can be accessed by dialing through the telephone network. Reorder Tone A tone that sounds like the busy signal, but is twice as fast. It indicates that all switching paths are busy. If you hear a reorder or fast busy, dial the number again. Touch-tone See DTMF. Page 42

51 Reference Manual Index Index! 2500 set A Abbreviated dialing B Busy Tone C Calling Party Control Calling Party Supervision... 12, 22 Canadian compliance... iv Cascaded SLTE Operation Centrex Compatibility... 3 Confirmation in programming... 15, 25 D Daisy-chained SLSS Operation Defaults defined Dial tone delay on priority interrupt call... 11, 21 Dual-tone multifrequency E Emergency priority defined... 11, 22 detailed operation... 12, 23 Emergency Priority Daisy-chain Error Tone... 15, 25 F FCC compliance... iii Forced disconnect G Ground start H Hacker I Industry Canada... iv Installation PBX or Key Telephone Systems... 7 Using Jack A... 6 Using Jack B K Key Systems installation with... 7 Key telephone system L LED indicators Line Sharing Switch... 5 Light-emitting diode Line Sharing Switch basic operation... 4 detailed operation... 13, 23 general description... 2 installation... 5, 7, 9 installation testing... 7 Manual Transfer Codes... 10, 21 No Default Routing... 10, 21 ordering information physical description... 3 programming command format... 15, 25 programming commands. 15, 16, 25, 26 Remote Programming... 11, 21 Transfer Codes Local programming Line Sharing Switch... 18, 28 Loop start Loop Start installation... 6 N No priority defined... 11, 22 detailed operation No Priority Daisy-chain... 31, 32 O Off-hook timeout at Line Sharing Switch... 14, 24 On-hook mode Operation as a system Ordering information P Passwords programming command... 16, 26 Patent... vi PBX installation with... 7 Polarity, line wiring Line Sharing Switch... 7 Polling Controller basic operation... 4 detailed operation general description... 2 ordering information , Rev. F Page 43

52 Reference Manual Index Polling Controller and Line Sharing Switch general description... 2 Polling System application... 2 basic operation... 4 Port access priority at Line Sharing Switch Dial Tone Delay... 11, 21 Port access priority at LSS Modem disconnect, loss of carrier Power loss at Line Sharing Switch... 11, 21 Priority Type Daisy-chain Priority, emergency defined... 11, 22 detailed operation... 12, 23 Priority, no defined... 11, 22 detailed operation Priority, total defined... 11, 22 detailed operation... 12, 23 Privacy timeout... 14, 24 Privacy timeout at Line Sharing Switch Programming local, Line Sharing Switch... 18, 28 remote, Line Sharing Switch... 19, 29 Programming commands Line Sharing Switch... 16, 26 R Remote Remote programming Line Sharing Switch... 19, 29 Return procedures Routing codes for LSS ports Routing digits received by Polling Controller S Safety information... v Specifications... 38, 39 T Total priority defined... 11, 22 detailed operation... 12, 23 Total Priority Daisy-chain... 31, 32 Transfer code from Polling Controller W Warranty information... 36, 37 Page 44