DIGITAL KEY TELEPHONE SYSTEM GENERAL DESCRIPTION

Transcription

1 TOSHIBA SYSTEM PRACTICES DIGITAL KEY TELEPHONE SYSTEMS DIGITAL KEY TELEPHONE SYSTEM COPYRIGHT 1993 TOSHIBA AMERICA INFORMATION SYSTEMS, INC. All rights reserved. No part of this manual, covered by the copyrights hereon, may be reproduced in any form or by any means graphic, electronic, or mechanical, including recording, taping, photocopying, or information retrieval systems without express written permission of the publisher of this material. Version 1.2

2 STRATA DK8 AND DK16 GENERAL END USER INFORMATION The STRATA DK8 and DK16 Digital Key telephone system is registered in accordance with the provisions of Part 68 of the Federal Communications Commission s Rules and Regulations. FCC REQUIREMENTS Means of Connection: The Federal Communications Commission (FCC) has established rules which permit the STRATA DK system to be connected directly to the telephone network. Connection points are provided by the telephone company connections for this type of customerprovided equipment will not be provided on coin lines. Connections to party lines are subject to state tariffs. Incidence of Harm: If the system is malfunctioning, it may also be disrupting the telephone network. The system should be disconnected until the problem can be determined and repaired. If this is not done, the telephone company may temporarily disconnect service. If possible, they will notify you in advance, but, if advance notice is not practical, you will be notified as soon as possible. You will be informed of your right to file a complaint with the FCC. Service or Repair: For service or repair, contact your local Toshiba telecommunications distributor. To obain the nearest Toshiba telecommunications distributor in your area, call Toshiba America Information Systems, Inc., Telecommunication Systems Division in Irvine, CA (714) Telephone Network Compatibility: The telephone company may make changes in its facilities, equipment, operations, and procedures. If such changes affect the compatibility or use of the STRATA DK system, the telephone company will notify you in advance to give you an opportunity to maintain uninterrupted service. Notification of Telephone Company: Before connecting a STRATA DK system to the telephone network, the telephone company may request the following: 1. Your telephone number. 2. FCC registration number: STRATA DK may be configured as a Key or Hybrid telephone system. The appropriate configuration for your system is dependent upon your operation of the system. If the operation of your system is only manual selection of outgoing lines, it may be registered as a Key telephone system. If your operation requires automatic selection of outgoing lines, such as dial access, Least Cost Routing, Pooled Line Buttons, etc., the system must be registered as a Hybrid telephone system. In addi- tion to the above, certain features (Off-premises Stations, etc.) may also require Hybrid telephone system registration in some areas. If you are unsure of your type of operaiton and/or the appropriate FCC registration number, contact your local Toshiba telecommunications distributor for assistance. STRATA DK8 DKSU Manufactured in Malaysia: Key system: CJ6MLA KF-E Hybrid: CJ6MLA MF-E STRATA DK16 DKSU Manufactured in Singapore: Key system: CJ6SNG KF-E Hybrid: CJ6SNG MF-E 3. Ringer equivalence number: 0.2B. The ringer equivalence number (REN) is useful to determine the quantity of devices which you may connect to your telephone line and still have all of those devices ring when your number is called. In most areas, but not all, the sum of the RENs of all devices connected to one line should not exceed five (5.0B). To be certain of the number of devices you may connect to your line, as determined by the REN, you should contact your local telephone company to ascertain the maximum REN for your calling area. 4. Network connection information USOC jack required: RJ11, RJ14C, RJ21X (see Table C). Items 2, 3 and 4 above are also indicated on the equipment label. RADIO FREQUENCY INTERFERENCE Warning: This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the manufacturer s instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case, the user, at his own expense, will be required to take whatever measures may be required to correct the interference. This system is listed with Underwriters Laboratory. UL Requirement: If wiring from any telephone exits the building or is subject to lightning or other electrical surges, then secondary protection is required. (See Installation & Maintenance Manual for more information.) LISTED U L 49L7 E88891 IMPORTANT NOTICE MUSIC-ON-HOLD In accordance with U.S. Copyright Law, a license may be required from the American Society of Composers, Authors and Publishers, or other similar organization, if radio or TV broadcasts are transmitted through the music-on-hold feature of this telecommunication system. Toshiba America Information Systems, Inc., hereby disclaims any liability arising out of the failure to obtain such a license.

3 TABLE OF CONTENTS PARAGRAPH SUBJECT PAGE 1 GENERAL... 1 Technology... 1 Maintenance and Programming SYSTEM CONFIGURATION SYSTEM COMPONENTS... 4 STRATA DK8 Key Service Unit... 4 STRATA DK8 Optional PCBs... 5 STRATA DK16 Base Key Service Unit... 8 STRATA DK16 Expansion Key Service Unit Toshiba Peripherals Customer-supplied Peripherals Cabling and Connectors SYSTEM FEATURES TELEPHONE FEATURES GLOSSARY FIGURE LIST FIGURE SUBJECT PAGE 1 STRATA DK8 & DK16 PERIPHERALS STRATA DK8 BASE KEY SERVICE UNIT STRATA DK16 BASE KEY SERVICE UNIT STRATA DK16 EXPANSION KEY SERVICE UNIT STRATA DK8 MAXIMUM CONFIGURATION STRATA DK16 MAXIMUM CONFIGURATION STRATA DK8 FUNCTIONAL BLOCK DIAGRAM STRATA DK16 FUNCTIONAL BLOCK DIAGRAM STRATA DK8 KEY SERVICE UNIT INTERIOR (CONNECTORS AND INTERFACES) STRATA DK16 BASE KEY SERVICE UNIT INTERIOR (CONNECTORS AND INTERFACES) STRATA DK16 EXPANSION KEY SERVICE UNIT INTERIOR BUTTON DIGITAL TELEPHONE WITH HANDSFREE ANSWERBACK (DKT2010-H) BUTTON DIGITAL SPEAKERPHONE WITH LIQUID CRYSTAL DISPLAY (DKT2010-SD) BUTTON DIGITAL SPEAKERPHONE (DKT2020-S) BUTTON DIGITAL SPEAKERPHONE WITH LIQUID CRYSTAL DISPLAY (DKT2020-SD) INTEGRATED DATA INTERFACE UNIT (PDIU-DI2) STAND-ALONE DATA INTERFACE UNIT (PDIU-DS) DOOR PHONE (MDFB) i

4 FIGURE LIST (CONTINUED) FIGURE SUBJECT PAGE 19 DOOR PHONE/LOCK CONTROL UNIT (DDCB) BUTTON DIRECT STATION SELECTION CONSOLE BUTTON DIGITAL TELPHONE WITH ADD-ON MODULE TABLE LIST TABLE SUBJECT PAGE A DK8 & DK16 GENERAL REQUIREMENTS B DK8 & DK16 STATION LOOP REQUIREMENTS C NETWORK REQUIREMENTS D SYSTEM TONES E DK8 KEY SERVICE UNIT COMPONENTS F DK16 BASE KEY SERVICE UNIT COMPONENTS G DK8 & DK16 TYPICAL RESERVE POWER DURATION ESTIMATES H DK16 EXPANSION KEY SERVICE UNIT COMPONENTS I DK16 PIOU/PIOUS INTERFACE OPTIONS J DK8 & DK16 FEATURE CAPACITIES K DK8 PERIPHERAL CAPACITY L DK16 PERIPHERAL CAPACITY M DATA INTERFACE SPECIFICATIONS N DK8 & DK16 SYSTEM FEATURES O DK8 & DK16 STATION FEATURES ii

5 1 GENERAL The STRATA DK8 and STRATA DK16 are private telephone systems that are tailor-made for small business applications. Each employs state-of-the-art technology to provide its users with an efficient, easy-touse, feature-rich telephone system. The systems easily connect to outside public telephone lines (central office lines), and all of the telephones (stations) tied to each system can have direct access to each other as well as to the public network. Designed with the knowledge that user needs typically evolve, the STRATA DK8 and DK16 can be upgraded with additional circuit boards to add more features and and/or capacities. Customers are not tied to one configuration; they can start at a standard configuration and then add to their system as their needs grow and change. Furthermore, many of the telephones and peripherals supported by STRATA DK8 and DK16 are also compatible with other STRATA systems. This compatibility saves customers money when they migrate from the smaller STRATA DK8 system to a STRATA DK16, or when they migrate from the STRATA DK8 and DK16 to a larger STRATA DK system. Utilizing specially designed digital or electronic telephones, solid-state electronics within the key service unit translate signals from the station push-button dial pad into either Dual-tone Multi-frequency (DTMF) or rotary-dial signals, as required by the central office. All telephones come equipped with voice announce speakers. Speakerphones and liquid crystal display telephones are also available. A large number of widely-used and sophisticated features are available to STRATA telephone users. Everyday features such as Call Transfer, Call Forwarding, Call Holding, and Call Pickup are executed with just the push of a button or the entry of a brief access code. More sophisticated feature operations are easily accomplished with the aid of optional displays built into telephones. In addition to telephones, a number of other useful peripherals can be connected to the system, including door phones for visitor screening; a music source for Music-on-hold; a speaker for Background Music and Paging; and a voice mail device like the Toshiba VP Voice Processing System for voice mail applications (see Figure 1). TECHNOLOGY The STRATA DK8 and STRATA DK16 utilize the advanced technologies noted below: ISDN-like Architecture: Toshiba digital telephones connect to the system with one-pair cabling, which uses a 2B+D ISDN-like digital link that can transmit and receive simultaneous voice and data along with control information. Pulse Code Modulation: Digital switching talkpaths allow all central office (CO) and intercom lines to be accessed simultaneously. Analog-to-digital and digital-to-analog conversion is accomplished by CODECs (coder plus decoder) on station and CO line printed circuit boards (PCBs). Stored Program Control: The system uses a 16-bit microprocessor for stored program control. System operating software is stored on 1 megabyte of read only memory (ROM), and individual configuration and custom programming is stored on 128 kilobytes of random access memory (RAM) for DK16 and 64K of RAM for DK8. A lithium battery with a life span of at least six years will preserve RAM in the case of a power failure. Microprocessors: The main microprocessor of the system is a 16-bit type that operates at a clock speed of 8 megahertz (MHz). In addition, some printed circuit boards employ 8-bit, TMP90C840-type local microprocessors that run at 10 MHz. This distributed microprocessing architecture is used throughout the system. Custom Electronic Circuitry: Large scale integration (LSI) technology enables STRATA DK8 and DK16 circuit design to be simple and efficient. Gate arrays using very large scale integration save vast amounts of space by utilizing the latest technology. More circuitry fits onto smaller PCBs for a more compact system. Widespread use of CMOS circuits minimize system power requirements. MAINTENANCE AND PROGRAMMING Maintaining and troubleshooting STRATA DK8 and DK16 is easy because of its modular architecture. 1

6 TOSHIBA POWER READY CONNECT POWER READY CONNECT TOSHIBA Night 1 All Call TOSHIBA TOSHIBA TOSHIBA TOSHIBA POWER READY CONNECT TOSHIBA STRATA DK8 & DK16 AUGUST 1993 DIU LEAST COST ROUTING REMOTE MAINTENANCE MAINFRAME COMPUTER ACCESS DIGITAL TELEPHONE WITH ADD-ON MODULE OFF-HOOK CALL ANNOUNCE TOSHIBA DIU DIU ALARM SENSOR (DK16 ONLY) STANDARD TELEPHONE MODEM POOLING FACSIMILE PRINTER (SHARING) STAND-ALONE DATA INTERFACE UNIT AC POWER DC AC DC EXTERNAL SPEAKER DOOR LOCK CONTROL SMDR DATA COLLECTION DOOR PHONE/ MONITOR STATIONS VOICE MAIL MUSIC-ON-HOLD/ BACKGROUND-MUSIC DIGITAL TELEPHONE WITH INTEGRATED DATA INTERFACE UNIT DSS CONSOLE (DK16 ONLY) T5100 PERSONAL COMPUTER CENTREX Figure 1 STRATA DK8 & DK16 PERIPHERALS 2

7 Problems are typically localized and do not affect other units. Hardware maintenance and repair procedures describe how to quickly locate, remove, and replace defective modules. System programming can be performed without taking the system out of service. On-site programming can be executed with any 20-button proprietary LCD (liquid crystal display) telephone, or with an ASCII terminal connected to an optional maintenance port. Off-site programming which can help cut costs and save time is available through an optional modem. 2 SYSTEM CONFIGURATION and a two-circuit standard telephone printed circuit board. An SMDR/TTY interface, a Music-on-hold source, a Background Music (BGM) source, a night bell, and an amplifier/speaker for external page may also be added as needed. At maximum configuration, the DK8 can interface with up to eight digital telephones, four CO lines, and AC DC The main building blocks of each system are cabinet-like units called Key Service Units. The STRATA DK8 consists of a single Key Service Unit (Figure 2). The STRATA DK16 is comprised of the Base Key Service Unit (Figure 3) and the Optional Expansion Key Service Unit (Figure 4). Every central office (CO) line, station, and peripheral connects to these units. The STRATA DK8 Key Service Unit comes equipped to interface with up to four Toshiba-proprietary digital telephones and two CO lines. It can be optionally equipped with up to two one-circuit CO line/two-circuit digital telephone printed circuit boards Figure 2 STRATA DK8 BASE KEY SERVICE UNIT AC POWER DC AC POWER DC Figure 3 STRATA DK16 BASE KEY SERVICE UNIT Figure 4 STRATA DK16 EXPANSION KEY SERVICE UNIT 3

8 two standard telephone devices. Note that while the DK8 provides up to ten station ports, only eight can support digital telephones. The last two standard station ports are designed for peripheral devices or standard telephone interfaces. The STRATA DK16 Base Key Service Unit comes equipped to interface with up to eight Toshibaproprietary digital telephones and four CO lines. It can optionally be equipped with a four-circuit standard telephone printed circuit board, a Music-on-hold source, a BGM source, a night bell, and an amplifier/speaker for external page. The optional STRATA DK16 Expansion Key Service Unit can be attached to the standard unit to increase system capacities. A system equipped with the optional unit can support up to eight CO lines and 16 Toshiba-proprietary telephones by using up to three additional PCBs. An SMDR/TTY interface may also be added as needed. Note that while the DK16 provides up to 20 station ports, only 16 can be digital telephones, with the last four standard station ports designed for peripheral device or standard telephone interface. Maximum capacities for STRATA DK8 and DK16 systems are shown in Figures 5 and 6. 3 SYSTEM COMPONENTS This section describes the components of the STRATA DK8 Key Service Unit and the STRATA DK16 Base and Expansion Key Service Units. The functional block diagrams in Figures 7 and 8 illustrate the organization and connection of these components. STRATA DK8 KEY SERVICE UNIT In addition to the +5 volt converter, main processor and operating software for the system, the Key Service Unit contains the circuitry and components (Figure 9 and Table E) as described in the following CO LINES DIGITAL TELEPHONES STANDARD TELEPHONES BASIC KEY SERVICE UNIT EXPANDED KEY SERVICE UNIT Figure 5 STRATA DK8 MAXIMUM CONFIGURATION BASE KEY SERVICE UNIT WITH EXPANSION KEY SERVICE UNIT CO LINES DIGITAL TELEPHONES ELECTRONIC TELEPHONES STANDARD TELEPHONES Figure 6 STRATA DK16 MAXIMUM CONFIGURATION 4

9 paragraphs. The weight and dimensions of the unit, which is designed for wall mounting, are as follows: Height: 16.4 in (416 mm) Width: 10.0 in (254 mm) Depth: 3.0 in (76 mm) Weight: 5.7 lbs (2.59 kg) Digital Telephone Circuits: The main circuit board has four integrated circuits that can connect to digital telephones, stand-alone data interface units (PDIU-DSs), and a digital door phone/lock control unit (DDCB). Furthermore, each of the digital telephones can support an integrated data interface unit (PDIU-DI) or an add-on module (ADM). CO Line Circuits: Two circuits for loop start central office (CO) lines are built into the main circuit board. Each line can be programmed for Dual-tone Multi-frequency (DTMF) or dial pulse signaling and has a switch to control potential excess volume that could be created by a nearby private branch exchange (PBX) or CO. Built-in gas tubes help protect each circuit from lightning. Power Supply: The power supply generates +24VDC for the entire system, even in its expanded configuration. Reserve Power: One or two optional Reserve Power Battery and Chargers (HPFBs) can be connected to the STRATA DK8 power supply to maintain normal operation during a power failure (See Table G for reserve power time.) Power Failure Interface: The Key Service Unit provides an interface for a dedicated backup standard telephone during a power failure. If the system power fails, the backup telephone will automatically connect to the CO1 line. This feature is independent of the HPFB. Music-on-Hold Interface: Customers can connect their own Music-on-hold source to this interface. The source can also feed external page speakers and telephone speakers with Background Music. Paging Interface: This 600-ohm interface can support a Toshiba external speaker (HESB) or a customer-supplied amplifier and speaker for Paging, night ringing, and Background Music applications. Flexible Relay Contact: A relay contact can be programmed to either mute Background Music during a page announcement over external speakers, to operate a device such as an answering machine or ringing bell during the Night Mode, or to provide on-off control for a Music-on-hold source. Conference Interface (QCNU): The standard, factory-installed QCNU provides two conference circuits which provide for simultaneous conversation between stations and/or CO lines connected to the DK8. The first conference circuit allows simultaneous conversation between four parties; the second circuit supports three parties. STRATA DK8 OPTIONAL PCBS Auto Attendant Feature Key (QKYS1): The QKYS1 plugs into the QRCU2A (not QRCU1) card to enable support of Built-in Auto Attendant. CO Line/Digital Telephone Interface Unit (QCDU): The QCDU provides one CO line circuit and two digital telephone circuits. The CO line circuit offers all of the features that the Key Service Unit CO line circuits provide, and the digital telephone circuits can support every peripheral (except DDCB) that the Key Service Unit digital circuits can support. Up to two QCDU units may be installed. Standard Telephone Interface Unit (QSTU): The optional QSTU provides two circuits that can interface with 500- and 2500-type standard telephones, as well as the other single-line devices listed below. These devices may require that the optional QRCU be installed in the Base Key Service Unit to interpret the Dual-tone Multi-frequency (DTMF) signals they may transmit. Fax Machines Modem Dictation Equipment Off-premises Stations Voice Mail Devices Auto Attendant Devices Auto Attendant Digital Announcers DTMF/ABR Tone Detection Receiver (QRCU): Station users in systems that have the optional QRCU installed can access Automatic Busy Redial (ABR) and communicate with devices, such as standard telephones or voice mail machines, that require Dual-tone Multi-frequency (DTMF) signaling. This unit is also required for Direct Inward System 5

10 POWER READY CONNECT TOSHIBA TOSHIBA TOSHIBA STRATA DK8 & DK16 AUGUST 1993 HPFB BATTERY AND CHARGER (FIRST) HPFB BATTERY AND CHARGER (SECOND) 117 (10 AMP) 50/60 HZ NOTE: One or two optional HPFB reserve power units may be installed. (see Table G) POWER FAILURE TELEPHONE DK8 KEY SERVICE UNIT AC INPUT QPSU8 POWER SUPPLY BATTERY CONNECTOR QCNU (STANDARD CONFERENCE PCB) PFT RCA JACKS QRCU (OPTIONAL) DTMF/ABR RECEIVERS (3) QKYSU (OPTIONAL) AUTO ATTENDANT FEATURE KEY KSU MAIN CIRCUIT BOARD (STANDARD) 4 DIGITAL TELEPHONE CKTS 2 LOOP CO LINE CKTS RELAY CONTACT 600Ω SPEAKER AMP PAGE OUTPUT MOH/BGM SOURCE DIGITAL TELEPHONE AND ADD-ON MODULE DIGITAL TELEPHONE DDCB MDFB DOOR PHONES AND LOCK CONTROL LOOP START LINES FIC: 02LS2 REN: 0.2B LINE 1 LINE 2 CO1 CO2 RJ11 MODULAR JACK NIGHT BELL, BGM MUTE, OR MOH (CONTROL RELAY) CENTRAL OFFICE/ CENTREX/PBX LINE 3 LINE 4 QCDU (FIRST/OPTIONAL) 2 DIGITAL TELEPHONE CKTS 1 LOOP CO LINE CKT CO3, RJ11 MODULAR QCDU (SECOND/OPTIONAL) 2 DIGITAL TELEPHONE CKTS 1 LOOP CO LINE CKT CO4, RJ11 MODULAR QSTU (OPTIONAL) 2 STANDARD TELEPHONE CKTS DIGITAL TELEPHONE AND ADD-ON MODULE DIGITAL TELEPHONE WITH INTEGRATED DATA INTERFACE STAND-ALONE DATA INTERFACE DIU SHARED PRINTER STANDARD TELEPHONE FAX QSMU (OPTIONAL) TTY OR SMDR INTERFACE CKT 25-PAIR AMPHENOL CONNECTOR 3-PAIR MODULAR INTERFACE SMDR PRINTER OR MAINTENANCE TERMINAL OR MODEM Figure 7 STRATA DK8 FUNCTIONAL BLOCK DIAGRAM 6

11 POWER READY CONNECT TOSHIBA STRATA DK8 & DK16 AUGUST 1993 RCA JACKS BASE KEY SERVICE UNIT 600Ω AMP SPEAKER MOH/BGM SOURCE KPSU16 _ + 12 VOLT BATTERY 117 VAC (15 AMP) 50/60 HZ OPTIONAL CUSTOMER SUPPLIED BATTERIES (SEE TABLE G) _ + 12 VOLT PBTC BATTERY CABLE CHARGER AC INPUT BATT _ + OPTIONAL FEATURE CARTRIDGE KFCU BUILT-IN DIGITAL TELE- PHONE CIRCUITS (8) OPTIONAL DTMF/ABR RCVRS (4) K4RCU DIGITAL TELEPHONE AND ADD-ON MODULE DIGITAL TELEPHONE AND DSS CONSOLE DDCB MDFB DOOR PHONES AND LOCK CONTROL POWER FAILURE TELEPHONE (PFT) RJ11 CO4 CO3 CO2 CO1 MODULAR CONNECTORS BUILT-IN CO LINE LOOP CIRCUITS (4) OPTIONAL STANDARD TELEPHONE CIRCUITS (4) KSTU NIGHT BELL, BGM MUTE, OR MOH (CONTROL RELAY) VOICE MAIL STANDARD TELEPHONE ALTERNATE BGM SOURCE LOOP START LINES FIC: 02LS2 REN: 0.2B PAGE ZONE 1 PAGE ZONE 4 CENTRAL OFFICE/ CENTREX/PBX DOOR LOCK OR BGM MUTE CONTROL RELAY NIGHT BELL OR MOH (CONTROL RELAYS) ALARM RELAY SENSOR MODULAR CONNECTORS RJ14C MAINTENANCE TERMINAL (TTY PORT) SMDR PRINTER (SMDR PORT) CO 5-8 LINES (4) PIOU PAGE ZONE RELAY CONTROL See Table I EXPANSION KEY SERVICE UNIT CO LINE PCB PCOU (4) CO LINE/ DIGITAL STATION PCB KCDU (2/4) RSSU TTY Port only PERIPHERAL INTERFACE PCB PIOUS OR PIOU IMDU (MODEM) STATION PCBs DIGITAL PDKU (8) ELECTRONIC PEKU (8) ELECTRONIC/ STANDARD PESU (4/2) STANDARD TELEPHONE PSTU OR RSTU (8) 25-PAIR AMPHENOL CONNECTOR DIGITAL TELEPHONE WITH INTEGRATED DATA INTERFACE STAND-ALONE DATA INTERFACE DIU MODEM PRINTER ELECTRONIC TELEPHONE DDCB DOOR PHONES AND LOCK CONTROL STANDARD TELEPHONE FAX PERSONAL COMPUTER 25-PAIR AMPHENOL CONNECTOR MDFB Figure 8 STRATA DK16 FUNCTIONAL BLOCK DIAGRAM 7

12 BATTERY JUMPER SW1, FOR CUSTOMER DATA MEMORY QPSU8 POWER SUPPLY AC POWER CORD/ PLUG 4' 7" QRCU-3 CIRCUIT DTMF AND ABR TONE DETECTOR PCB (optional) J6-25-PAIR AMPHENOL JACK FOR TELEPHONE TIP/RING AND RELAY CONTACT (FEMALE) WARNING Hazardous voltage inside! If servicing required, remove A.C. cord. QCNU (standard) Conference QSTU (QSTS) (optional) 2-Standard Telephone Circuits ON OFF BATT SW1 QMA ROM QSMU (optional) QCDU (optional) 1-CO line CKT (4) 2-Digital 2-Telephone CKT QCDU (optional) 1-CO line CKT (3) 2-Digital 2-Telephone CKT AC DC DC POWER ON/OFF SWITCH SMDR/TTY 3-PAIR MODULAR JACK CO4 CO2 CO1 CO3 MODULAR RJ11 JACKS RESERVE BATTERY CONNECTOR AC AND DC POWER INDICATOR LEDs QSMU, SMDR/TTY PCB PFT, RJ11 MODULAR JACK MOH JACK 600Ω PAGE MAIN CIRCUIT BOARD MUSIC-ON HOLD RCA JACK VR701 MOH PAGING OUTPUT RCA JACK VOLUME CONTROL Figure 9 STRATA DK8 KEY SERVICE UNIT INTERIOR (CONNECTORS AND INTERFACES) Access (DISA) operation. Each QRCU card provides three shared circuits. IMPORTANT NOTE: The QRCU2 version of this circuit card is required for Built-in Attendant operation. SMDR/TTY Interface Unit (QSMU): The optional QSMU provides an interface for either SMDR output or TTY maintenance port. QSMU operation is software selectable (TTY or SMDR). A customersupplied printer or Call Accounting device can be connected to the QSMU for SMDR or a terminal (local maintenance) or modem (Remote Maintenance) can be connected to the QSMU for system programming. Only one option (SMDR or TTY) can function at a time. STRATA DK16 BASE KEY SERVICE UNIT In addition to the main processor and operating software for the system, the Base Key Service Unit contains the circuitry and components (Figure 10 and Table F) described as follows. The weight and dimensions of the unit, which is designed for wall mounting, are as follows Height: 18.0 in (457 mm) Width: 12.2 in (310 mm) Depth: 3.4 in (86 mm) Weight: 8.4 lbs (3.8 kg) Digital Telephone Circuits: The main circuit board has eight integrated circuits that can connect to digital telephones, stand-alone data interface units (PDIU-DSs), one digital door phone/lock control 8

13 PULL LOCK PUSH UNLOCK BATT ± AC DC POWER BATTERY BACKUP INTERFACE POWER SUPPLY CONNECTOR TO K4RCU SW1 MEMORY BATTERY BACKUP STRAP CONNECTOR TO KSTU KSTU FEATURE CARTRIDGE (KFCU) KRCU K4RCU CO4 CO3 CO2 CO1 MODULAR CONNECTORS PFT MODULAR CONNECTOR 600 OHM PAGE RCA JACK CONNECTOR TO KSTU MUSIC-ON-HOLD VOLUME CONTROL MUSIC-ON-HOLD RCA JACK AMPHENOL CONNECTOR FOR DIGITAL AND STANDARD TELEPHONES Figure 10 STRATA DK16 BASE KEY SERVICE UNIT INTERIOR (CONNECTORS AND INTERFACES) unit (DDCB), and a digital direct station selection console (DDSS). Furthermore, each of the digital telephones can support an integrated data interface unit (PDIU-DI) or an add-on module (ADM). CO Line Circuits: Four circuits for loop start central office (CO) lines are built into the main circuit board. Each line can be programmed for Dual-tone Multi-frequency (DTMF) or dial pulse signaling and has a switch to control potential excess volume that could be created by a nearby private branch exchange (PBX) or CO. Built-in gas tubes help protect each circuit from lightning. Power Supply: The power supply generates ±5VDC and -24VDC for the entire system, even in its expanded configuration. Two customer-supplied 12-volt batteries can be connected to the power supply to maintain normal operation during a power failure. The power supply provides a built-in charger for the batteries (Table G). Power Failure Interface: The Base Key Service Unit provides an interface for a dedicated backup standard telephone during a power failure. If the system power fails, the backup telephone will automatically connect to the CO1 line. This feature is independent of Battery Backup. Music-on-Hold Interface: Customers can connect their own Music-on-hold source to this interface. The source can also feed external page speakers and telephone speakers with Background Music. Paging Interface: This 600-ohm interface can support a Toshiba external speaker (HESB) or a customer-supplied amplifier and speaker for Paging and Background Music applications. 9

14 Flexible Relay Contacts: A pair of relay contacts can be programmed to either mute Background Music during a page announcement over external speakers, to operate a device such as an answering machine or ringing bell during the Night Mode, or to provide on-off control for a Music-on-hold source. Standard Telephone Interface Unit (KSTU): The optional KSTU provides four circuits that can interface with 500- and 2500-type standard telephones, as well as the other single-line devices listed below. These devices may require that the optional K4RCU be installed in the Base Key Service Unit to interpret the Dual-tone Multi-frequency (DTMF) signals they may transmit. Fax Machines Modem Dictation Equipment Alternate Background Music source Off-premises Stations Voice Mail Devices Auto Attendant Devices DTMF/ABR Tone Detection Receiver (K4RCU): Station users in systems that have the optional K4RCU installed can access Automatic Busy Redial (ABR); and, communicate with devices, such as standard telephones or voice mail machines, that require Dual-tone Multi-frequency (DTMF) signaling. This unit is also required for Direct Inward System Access (DISA) operation, as well as for Built-in Auto Attendant operation. Each K4RCU card contains four shared receivers. Feature Cartridge (KFCU): The optional plug-in feature cartridge will allow for the integration of future feature upgrades. The KFCU1A version of this cartridge is required for Built-in Auto Attendant operation. STRATA DK16 EXPANSION KEY SERVICE UNIT The optional Expansion Key Service Unit, which attaches easily to the side of the Base Unit, offers four universal slots (Figure 11), three of which can host any of the printed circuit boards (PCBs) described in the following paragraphs (Table H). The weight and dimensions of the unit are as follows: Height: 18.0 in (457 mm) Width: 7.8 in (198 mm) Depth: 3.4 in (86 mm) Weight: 1 lb (.45 kg) when empty Weight: 5.3 lbs (2.4 kg) when full NOTE: No more than three Expansion Key Service Unit slots can be occupied at one time. The fourth slot is reserved for future use. CO Line Interface Unit (PCOU): The PCOU has four loop start CO line circuits that have the same characteristics as the CO circuits in the Base Key Service Unit. Digital Telephone Interface Unit (PDKU): The PDKU has eight digital telephone circuits that can support the same peripherals as the digital circuits in the Base Key Service Unit. Option Interface Unit (PIOU): The PIOU provides interfaces for such useful features as external zone paging, Station Message Detail Recording (SMDR), and a remote maintenance modem subassembly (IMDU). Additionally, it has relay contacts for the control of a customer-provided door lock, Music-on-hold source, or other optional device (see Table I). The PIOU card's three-watt or 600 Ω paging output is not used since paging is supported by the Base Key Service Unit paging interface. Simplified Option Interface Unit (PIOUS): With the exception of the Zone Paging interface, the PIOUS has everything that the PIOU has, including the SMDR and IMDU interfaces (Table I). Remote Maintenance Modem Subassembly (IMDU): The IMDU is an optional modem that joins to a PIOU or PIOUS to provide the system with a link to off-site programming and maintenance equipment, such as a personal computer or ASCII terminal. It has an internal maintenance channel and does not require a dedicated CO line or station port. Data transmission speed can be set at 300 or 1200 BPS full duplex. Remote/Local Maintenance Interface Unit (RSSU): Option TTY interface PCB used for connecting a maintenance terminal or external modem (local or remote) to the DK16. Requires the DK16 expansion cabinet. 10

15 STRATA DK16 BASE UNIT EXPANSION CARD SLOTS* STRATA DK16 EXPANSION UNIT SIDE COVER EXPANSION COVER Figure 11 STRATA DK16 EXPANSION KEY SERVICE UNIT INTERIOR * NOTE: One slot is reserved for future use. Standard Telephone Interface Unit (PSTU): The PSTU has eight standard telephone circuits which can interface with the same devices as the optional KSTU in the Base Key Service Unit. A K4RCU installed in the Base Key Service Unit interprets DTMF tones transmitted by devices connected to the PSTU. Standard Telephone Interface Unit (RSTU): The RSTU has eight circuits that can support single-line devices. Besides rotary and push-button standard telephones, the RSTU can support fax machines, dictation equipment, modems, a separate Background Music Source, off-premises stations, Toshiba VP (Voice Processing) systems, digital announcement devices for the optional Built-in Auto Attendant feature, and customer-supplied voice mail devices. A K4RCU installed in the Base Key Service Unit interprets DTMF tones transmitted by devices connected to the RSTU. R48S: The optional R48S unit can be connected to the RSTU to extend the loop length (resistance level) of standard telephone circuits from 600 ohms to 1200 ohms. This allows standard telephones to be connected at further distances from the DK16 system. Electronic Telephone Interface Unit (PEKU): The PEKU provides eight electronic telephone circuits that can interface with electronic telephones, an Alternate Background Music (BGM) source, a direct station selection console (HDSS), an exter- 11

16 nal amplifier for Direct Inward System Access (DISA) or two-co line Conferencing. Standard/Electronic Telephone Interface Unit (PESU): The PESU PCB offers two standard and four electronic telephone circuits. Its standard circuits support the same devices as the KSTU and PSTU, and its electronic circuits interface with the same peripherals as the PEKU, except for the HDSS console. Standard DTMF telephone circuit operation requires a K4RCU in the Base Key Service Unit. Off-hook Call Announce Upgrade Unit (EOCU): Electronic telephones connected to PEKU and PESU PCBs can receive Off-hook Call Announce intercom calls over their speaker while they are on another call if the PCBs are equipped with an EOCU. Digital telephones also support this function but do not require an EOCU type PCB in the KSU. CO Line/Digital Telephone Interface Unit (KCDU): The KCDU provides two CO line circuits and four digital telephone circuits. The CO line circuits offer all of the features that the Base Key Service Unit and the PCOU line circuits provide. The digital telephone circuits can support every peripheral (except for the DDSS console) that the PDKU and a Base Key Service Unit digital circuit can support. TOSHIBA PERIPHERALS Toshiba offers a number of peripherals that can be connected to the STRATA DK8 and DK16 systems. Tables K and L contain the capacity and interface of each peripheral, including customer-supplied peripherals. Digital Telephones: The STRATA 2000-series digital telephones possess the most up-to-date calling and messaging features. Each telephone has an attractive design and is available in either charcoal gray or ash white. The STRATA DK8 can support up to eight of the 2000-series digital telephones; the STRATA DK16 can support as many as 16. There are four models in this series the DKT2010-H (Figure 12), DKT2010-SD (Figure 13), DKT2020-S (Figure 14), and the DKT2020-SD (Figure 15) each of which provides some or all of the features described below. Liquid Crystal Display (LCD) Available with the DKT2010-SD and the DKT2020-SD, LCDs display a variety of calling and messaging information. LCD telephone users can access the following features and more: Feature Prompting Soft Keys Alphanumeric Messaging Busy Lamp Field (BLF) Indication Central Office (CO) Line Identification Timed Reminders with Messaging Intercom User Name/Number Display Called Number Display Call Duration Display Date/Time of Day Display Speakerphone DKT2010-SD, DKT2020-S, and DKT2020-SD users can each receive and make outside calls without lifting the handset. Handsfree Answerback DKT2010-H users can answer intercom calls from the telephone set speaker without lifting the handset. Flexible Buttons Each model has flexible buttons which can be assigned as feature buttons, eliminating the need to dial access codes. The DKT2010-H and the DKT2010-SD both have 10 flexible buttons, and the DKT2020-S and DKT2020-SD have 20 flexible buttons. Fixed Buttons Fixed buttons, which are permanently assigned to all of the models, provide access to frequently-used features, such as Hold and Redial. Digital Telephone Upgrade Options: Digital telephones may be upgraded for the following options. Integrated Data Interface Unit (PDIU-DI2): Users of digital telephones equipped with a PDIU-DI2 (Figure 16) connected to a personal computer (PC) or ASCII terminal can make data calls to printers, personal computers, and other data devices, as well as both internal and external voice calls. Add-on Module (ADM): An ADM (Figure 21) can be connected to a 2000-series digital telephone to provide 20 Direct Station Selection buttons for STRATA DK16; and 10 Direct Station Selection buttons, eight personal Speed Dial buttons, one Night Transfer button, and one All Call Page button for STRATA DK8. 12

17 white phone Figure BUTTON DIGITAL TELEPHONE WITH HANDSFREE ANSWERBACK (DKT2010-H) Figure BUTTON DIGITAL SPEAKERPHONE WITH LIQUID CRYSTAL DISPLAY (DKT2010-SD) Figure BUTTON DIGITAL SPEAKERPHONE (DKT2020-S) Figure BUTTON DIGITAL SPEAKERPHONE WITH LIQUID CRYSTAL DISPLAY (DKT2020-SD) Off-hook Call Announce (DVSU): DVSUequipped digital telephones can receive Offhook Call Announce. Every digital telephone can have this upgrade, which allows stations to receive intercom calls over their speaker while on another call. No extra wires to the telephone are required. Loud Ringing Bell/Headset Interface (HHEU): The HHEU provides interfaces for both a headset and a Loud Ringing Bell speaker. With Loud Ringing Bell, the speaker circuitry amplifies the ringing or voice announcement of an incoming call. Toshiba VP Voice Messaging Systems: Toshiba VP Voice Messaging Systems, which provide a wide array of useful and progressive features, are compatible with both STRATA DK8 and DK16 systems. Stand-alone Data Interface Unit (PDIU-DS): PDIU- DSs (Figure 17) enable users to make switched data connections for modem pooling, printer sharing, and host/mainframe computer accessing. LEDs on the front panel of the PDIU-DS indicate the status of each call. Door Phone/Lock Control Unit (DDCB): Door phones (MDFBs) (Figure 18) can serve a variety of 13

18 functions. The door phone is often used with a door lock to screen visitors to a building. Door phones also can operate as a hot line calling link between an office and a warehouse. The door phone/lock control unit (DDCB) connects door phones and door locks to the system. The unit (Figure 19) has three interfaces, two of which can each support a door phone and another which can support either a door phone or a customer-provided door lock. The DDCB connects only to digital telephone circuits. Direct Station Selection Consoles STRATA DK16 only (DDSS and HDSS): Consoles are dedicated answering stations that are normally used on systems that receive a heavy volume of incoming calls (Figure 20). They operate alongside a digital or electronic telephone and have 60 buttons which can be programmed for Direct Station Selection, central office (CO) lines, All Call Page, Night Transfer, and Speed Dial. NOTE: Direct station selection consoles can be connected to STRATA DK16 only. There are two types: the digital direct station selection console (DDSS) can only be connected to designated Base KSU and PDKU digital telephone circuits, while the electronic direct station selection console (HDSS) can only be connected to designated circuits on the PEKU, installed in the Expansion KSU. Figure 16 INTEGRATED DATA INTERFACE UNIT (PDIU-DI2) Figure 17 STAND-ALONE DATA INTERFACE UNIT (PDIU-DS) Figure 18 DOOR PHONE (MDFB) Figure 19 DOOR PHONE/LOCK CONTROL UNIT (DDCB) 14

19 white phone Figure BUTTON DIRECT STATION SELECTION CONSOLE (DDSS SHOWN) Figure BUTTON DIGITAL TELEPHONE WITH ADD- ON MODULE Electronic Telephone (STRATA DK16 only): Users migrating upwards from older Strata systems can carry forward up to eight of their electronic telephones to use on a Strata DK16 with expansion cabinet. Most of the features available on the digital telephone are also available on the electronic version; the most important exceptions are the lack of handset adjustable prompting, and LCD larger character size. External Speaker: The HESB is a multifunctional, external 6-inch, 3-watt amplified speaker unit. It can be used as a paging speaker, an amplified talkback speaker, or a Loud Ringing Bell. CUSTOMER-SUPPLIED PERIPHERALS The STRATA DK8 and DK16 support many customer-supplied peripheral devices, several of which are listed below: Voice Mail/Auto Attendant Device Dictation Equipment External Maintenance Modem Fax Machine Local Maintenance Terminal Alternate BGM Source Music-on-Hold/Background Music Source External Page Equipment CABLING AND CONNECTORS STRATA DK8 and DK16 utilize industry standard cabling and connectors to interface with central office (CO) lines, stations, and peripherals. Stations use standard twisted pair cabling to connect to the system via the main distribution frame (MDF). Digital and standard telephones require just one pair, whereas electronic telephones (STRATA DK16 only) need two-pair (Table B). Station printed circuit boards (PCBs) and circuits connect to stations and peripherals with a 25-pair amphenol connector via the MDF. CO line circuits interface with the public telephone network via modular connectors. 4 SYSTEM FEATURES This section describes features that are available on a system-wide basis for both DK8 and DK16, except where otherwise noted (Table N). Account Codes (Forced/Voluntary/Verified): Account Codes provide a method of tracking and categorizing central office (CO) calls on the Station Message Detail Recording (SMDR) report. They may be required before dialing calls (Forced) or can be optionally entered during calls (Voluntary). Codes can be as long as 15 digits and be Verified 15

20 (specific numbers) or Nonverified (nonspecific numbers). A printout of each Account Code prints out on the SMDR report after each call. NOTE: The 911 emergency number bypasses Forced Verified Account Code requirements. In addition, two other customer-assigned numbers (1 ~ 4 digits) may be programmed to bypass Forced Verified Account Code requirements. Alarm Sensor (DK16 only): The optional PIOU/PIOUS printed circuit board (PCB) has a relay that can be connected to a customer-supplied alarm system. If the alarm system is tripped, the relay will cause the speakers of all electronic and digital telephones to emit a loud alert tone. The digital or electronic telephone alarm tone is reset from any station programmed with a designated button. All Call Voice Page: A user can page all station speakers simultaneously. External speakers can also be part of an All Call Voice Page. Alternate Point Answer: Users can answer a transferred central office (CO) line call from any station that also has the CO line. Amplified Conference Interface (DK16 only): This unit provides an interface for a customer-supplied amplifier. The amplifier is shared by all CO lines and will be automatically connected to a two-co line or Direct Inward System Access (DISA) call to provide a louder sound level on these types of calls. To support an Amplified Conference Interface, a PEKU or PESU is required in the expansion unit. A maximum of one amplifier per system can be connected. The amplifier is automatically switched into 2-CO line DISA or conference calls on a first call basis (only one amplified call at a time). Auto Attendant (Built-in): The optional Built-in Auto Attendant feature operates like an automatic station attendant or switchboard operator that quickly and efficiently distributes calls to stations selected by callers. With 24-hour coverage, Auto Attendant can process a large volume of calls, freeing employees to perform other tasks. Incoming callers will hear a menu of dialing prompts, such as Dial 3 for Sales; dial 4 for Customer Service (up to 10 selections are available). After the caller dials the digit, he/she will be routed to a station that has been assigned via system programming to the selected digit. Built-in Auto Attendant utilizes a standard telephone port. Additional supportive hardware requirements for DK8 systems include the DTMF/ABR Tone Detection Receiver (QRCU2 only) and the Auto Attendant Feature Key (QKYS1). DK16 systems require the DK16 DTMF/ABR Tone Detection Receiver (K4RCU) and a plug-in Feature Cartridge (KFCU1A). Automatic Hold: Automatic Hold enables a user to place an outside call appearing on a CO line button on hold simply by pressing another CO line or intercom button. The user can then alternate between the new and the old call simply by pressing the desired button. If this feature is not activated, users need to press the Hold button before accessing another line and switching between calls. This feature is optionally programmable for each telephone set. Automatic Hold/Park Recall: Held calls can be programmed to ring back, after a designated time, the station that placed them on-hold. The recall time of each station can have an individual time set independently in programming for this feature, which helps ensure that held calls are always retrieved. Automatic Release from Hold/DISA: The system can automatically disconnect a central office (CO) line on which a held party hangs up. This also applies to Direct Inward System Access (DISA) calls and voice mail calls. Automatic Release is available on a CO-by-CO-line basis and operates only with COs that provide a disconnect signal. Automatic Station Relocation: System users can relocate their stations and maintain the intercom numbers and features of their telephones, without having to reprogram their system. Background Music (BGM): BGM can be sent to telephone speakers and external speakers. The BGM source can be applied flexibly. One music source can feed both types of speakers, or, in DK16 only, each can have its own source. The music source used for Music-on-hold can also be piped to telephone speakers. An alternate BGM source can be connected to a QSTU in DK8, or a KSTU, PESU, PEKU, PSTU, or RSTU in DK16. 16

21 Busy Station Transfer/Ringing: When a station or external auto attendant device programmed for this feature transfers a call to a busy digital or electronic telephone with this feature, the transferring station or auto attendant device will receive a ringing signal (instead of a busy tone) and the called busy station will receive a distinct call waiting tone and LED indication. At this point, the transferring station or auto attendant device will normally release and the call will camp-on the busy station, providing a distinctive camp-on tone and CO line LED flash. The busy station can then answer the transferred call after it releases, transfers, or places its current call on hold. Without Busy Station Transfer/Ringing, stations and auto attendant devices will receive busy tone when trying to transfer calls to busy stations. Some auto attendant devices cannot transfer calls after receiving busy tone, and the transferred calls are routed back to them. Centrex/PBX Compatible: All system features are compatible with Centrex/PBX operation; including repeat of Centrex/PBX ringing cadence, one-button access to Centrex/PBX features, 1 ~ 4-digit station numbering plan, and delayed ringing to selected stations. Centrex Ringing Repeat: The system mimics CO/Centrex/PBX cadences received from outside lines when it rings a called station. This capability enables STRATA DK8 and DK16 to use special CO/Centrex/PBX calling/callback features. CO Line Groups: For easy access, various types of CO lines can be assigned to groups (normally for pooled line and Least Cost Routing (LCR) applications). All local lines, for example, can be assigned to one group and WATS lines in another group. Station users can access line groups with a dialing code or by pressing a feature button. Up to four CO line groups for DK8 and up to eight CO line groups for DK16 can be created. CO Line Queuing: A station user can use the Automatic Callback feature to queue up for a busy outgoing CO line. When the CO line finally becomes available, the system calls the station back. Queuing applies to single CO lines, CO line groups, and when calling via LCR. Conferencing: A variety of Conferencing combinations are available to all station users, as listed below. Stations and central office (CO) lines can be added in any order. One or two stations and two CO lines Two or three stations and one CO line Four stations Credit Card Calling: Callers can make credit card calls (0+ telephone number + credit card number) that bypass Toll Restriction. The calls are billed to the credit card, not the STRATA DK8 and DK16 central office (CO) line. The system requires that a specific quantity of digits are dialed for this call; otherwise, the call will be dropped within 20 seconds to prevent operator-placed calls that would be billed to the CO line. Data Calling: STRATA DK8 and DK16 offers a sophisticated optional data switching capability that can interconnect a wide range of customer-supplied data equipment, including personal computers (PCs), printers, and modems. Asynchronous data can be transmitted at speeds up to 19.2 kbps (see Table M). The system provides four data security groups to restrict data calls between groups. Dialing by personal computer (both data and voice calls) as well as modem pooling and printer sharing is supported. DAY/NIGHT Modes: The system has three available modes: DAY, DAY2, and NIGHT. Each mode can be assigned a distinct CO-to-station, CO-to DISA, and CO-to-Remote Maintenance channel ringing arrangement. The system can be programmed with either two or three modes (which can be changed by any station programmed with a Night Transfer button): Two modes: Three modes: DAY DAY NIGHT DAY2 NIGHT Delayed Ringing: If a central office (CO) line call rings a station and is unanswered, alternate stations can be programmed to ring 12 or 24 seconds later. The stations that were ringing initially will continue after the Delayed Ringing begins. This feature is assigned on a line-by-line basis. Direct Inward System Access (DISA): Outside callers using a Dual-tone Multi-frequency (DTMF) 17