Digital Trunks 20 Objectives When you finish this module, you will: Understand the different types of digital trunks. Be able to connect digital trunks to the controller. Configure digital trunks. Synchronize digital trunks in a networked environment. Know the supported protocols for digital trunking. Program T1 digital trunks. Program an NSU s ISDN PRI/QSIG protocol using IMAT. Use maintenance commands to monitor T1 links.
MCD for 3300 ICP Basic Installation and Maintenance Course Reference Help > Contents > System Programming > Trunks > Digital Trunks > Program Embedded PRI/QSIG Trunks Help > Contents > System Programming > Trunks > Digital Trunks > Program PRI/QSIG Trunks 20-2 Digital Trunks_rev5.doc
Digital Trunks Digital Trunks There are two primary methods of providing signaling over digital trunks. Channel Associated Signaling (CAS) CAS is used with T1/D4 digital links, with each link supporting 24 trunks, or channels. Each T1 trunk can be: An E&M trunk, used to tie co-located or remote PBXs together A LS/GS trunk, simulating an analog version of the trunk A DID trunk, simulating an analog version of the trunk. Common Channel Signaling (CCS) CCS is used with PRI, QSIG and Mitel Services Digital Network (MSDN) digital links, with each link supporting 23 channels. ESM Forms All digital link types, T1/D4, PRI, QSIG and MSDN use the same six ESM forms: Digital Link Descriptors Digital Links Trunk Circuit Descriptors, specific to the trunk type MSDN-DPNSS-DASSII (DPNSS-Digital Private Network Signaling System) Digital CO Digital E&M Digital DID Trunk Attributes Digital Trunks Network Synchronization 20-3
MCD for 3300 ICP Basic Installation and Maintenance Course Installation Summary The following is an installation summary, giving the major steps for installing T1 trunks on the system. These procedures must be performed on each of the PBXs connected by the T1 link. Install the hardware Dual T1/E1 Framer T1/E1 Combo Dual FIM modules Universal NSU Program the Controller Modules or NSU with a programmed type and protocol. Program the links to tell the system what software to use to drive the links. Program the trunks to establish trunk types. Obtain information about link performance and take action where required. 20-4 Digital Trunks_rev5.doc
Digital Trunks Planning the Network Planning the network consists of: Managing Call Collisions on Digital E&M Trunks When callers at either end of a network link simultaneously seize the same E&M trunk on the link, it is best if one of the PBXs backs down and allows the other to use the trunk. This allows at least one of the parties to make the call and no unintended connections are established. On E&M trunks, the 3300 ICP uses the AT&T collision protocol. One end backs down while the other does not. This is controlled with the Backoff/No Backoff value in the Digital E&M Trunk Circuit Descriptors. The system at one end should be set to Backoff while the other end is set to No Backoff. Managing Call Collisions Synchronizing the Network Each 3300 ICP has a clock that controls its T1 data transmission and reception speed. To communicate effectively with a system at the other end of a T1 link, one system s clock must operate at the same speed as the other system s clock. If the clocks operate at different speeds, the systems get out of synch with each other. Eventually one system resets its clock. This synchronizes the clocks, but some data is lost in the reset. Voice and Data A system clock reset affects voice and data connections differently. In a voice connection, the user may hear an almost unnoticeable click. Minor slips do not adversely affect analog modem connections. With a data connection at 56 or 64 kbps, some of the transmitted data is lost. If there is error checking between the communicating devices, it will cause a request for retransmission. If there is no error checking, the data is permanently lost. 20-5
MCD for 3300 ICP Basic Installation and Maintenance Course Adjusting Clock Speeds It is better if one system speeds up or slows down its clock in an ongoing basis to match the speed of the other system s clock. Clock resets are then not necessary and no data is lost. The system that adjusts its clock to match the speed of the other system is called the slave system. When you assign a synch source in the Network Synchronization form, the system begins to automatically adjust its clock to the synch source in the other system. The following diagram shows the master-slave relationships for each of five links in a network. Notice that the clock in PBX 1 is slaved, or synchronized, to the CO clock over Link A. The clocks in PBXs 2, 3, 4, and 5 are slaved to PBX 1 s clock. In this scenario, the CO clock is the master clock for the entire network. Synchronizing a Network 20-6 Digital Trunks_rev5.doc
Digital Trunks Programming Network Synchronization In the Network Synchronization form, list the link(s) to which you want your system s clock to synchronize. If your system has links to more than one system, list the links in the order in which you want your system to use them as synch sources. If a synch source fails, the system will synchronize to the next synch source listed in its Network Synchronization form. If the preferred synch source returns to service, the system will synchronize to it again. If your system has a T1 connection to the public network, you should synchronize to that clock source, like PBX 1 above. Other network nodes should synch to that system, like PBXs 2, 3, 4, and 5 above. Note If your PBX is the master clock source for the entire network, the Network Synchronization form must have no entries in it. 20-7
MCD for 3300 ICP Basic Installation and Maintenance Course Primary Rate Interface (PRI) ISDN Trunks Primary Rate Interface (PRI) ISDN and QSIG trunk protocols are supported on the 3300 ICP and are connected through: Dual T1/E1 Framer modules on the MXe. T1/E1 Combo modules on the MXe and CX/CXi. Universal Network Services Unit (NSU) The Dual T1/E1 Framer and T1/E1 Combo modules are fitted directly into the appropriate module slot of the 3300 Controller. The NSU is connected to the 3300 controller with a fiber cable. Dual T1/E1 Framer T1/E1 Combo Module Physical Connections The Dual T1/E1 Framer, T1/E1 Combo module, and NSU all have RJ45 connectors on the: Front of the Dual T1/E1 Framer or T1/E1 Combo module. Back of the NSU. The links have status LEDs. Both links on the NSU have switches for setting impedance and providing a TX and RX crossover. Reference Refer to the Technician's Handbook for LED status and switch settings. 20-8 Digital Trunks_rev5.doc
Digital Trunks Protocols The Dual T1/E1 Framer or T1/E1 Combo Module T1 links support the following protocols: ISDN PRI QSIG T1/D4 The NSU T1 links support the following protocols: T1/D4 MSDN/DPNSS PRI QSIG Note Both links of the NSU must run the same protocol. The following table summarizes the support capabilities of each type of hardware. Dual T1/E1 Framer T1/E1 Combo Universal NSU T1 E1 T1 E1 T1/D4 Digital E&M, Digital CO, Digital DID Format T1/DS1 MSDN/DPNSS/DASSII CEPT MSDN/DPNSS/DASS II ISDN PRI Euro-ISDN PRI Q.Sig 20-9
MCD for 3300 ICP Basic Installation and Maintenance Course Programming PRI/QSIG Programming a T1 link as PRI/QSIG is done by first programming the T1 digital links, and their 23 channels each, into the database. Then program the ISDN PRI or QSIG protocol onto the link. The PRI/QSIG protocol programming on the embedded modules is slightly different than the programming on the NSU. With the embedded modules, you program the PRI/QSIG protocol at the same time as the digital trunks. This PRI module is in three parts: Programming T1 Digital Links, which is common to both the embedded modules and the NSU. Programming PRI/QSIG on embedded modules. Programming ISDN PRI/QSIG Protocol on the NSU. With the NSU, first program the digital links in ESM and then program the PRI/QSIG protocol directly into the NSU using a PC connected either through the serial connector or an Ethernet connection, which is the preferred method. The Mitel-supplied ISDN Maintenance and Administration Tool (IMAT) program is used for this. IMAT is available in the 3300 Software CD in the Tools folder. 20-10 Digital Trunks_rev5.doc
Digital Trunks T1 Digital Trunk Programming Use the Controller Module Configuration form to configure the T1/E1 modules and the Dual FIMs. Use the Dual T1/E1 Framers form to assign the T1 protocol to the T1/E1 Modules. Use the Network Services Units form to indicate that the NSU is connected via a Dual FIM or as a secondary unit. The links use the Universal T1 protocol. 20-11
MCD for 3300 ICP Basic Installation and Maintenance Course Controller Module Configuration Form In this example, a dual FIM is programmed to Module 1 and the Dual Framer to Module 2. The next step is to configure the NSU and Dual T1/E1 Framer module. Dual T1/E1 Framers Form In this example, the Dual T1/E1 Framer module is assigned as Unit 7. If you have several NSUs in your system, each with a unit number, you may have to manually check in the Network Services Units form to determine the next available unit number. Set the Interface Type for each port on the Dual T1/E1 Framer module. E1 in EMEA T1 in NA Network Services Units Form In this example, the NSU is assigned as Unit 6 and the protocol as Universal T1. 20-12 Digital Trunks_rev5.doc
Digital Trunks Digital Trunk Forms For the T1/E1 modules and the NSU, the ISDN menu is used. The following forms are programmed: Digital Link Descriptors Digital Links MSDN-DPNSS-DASSII Trunk Circuit Descriptor Trunk Attributes Digital Trunks Class of Service Options Network Synchronization The T1 trunks need to have options set in their COS, and the extensions that will use the trunks need options in their respective COS forms. Finally, ARS is programmed to allow outgoing calls to be made. 20-13
MCD for 3300 ICP Basic Installation and Maintenance Course Digital Link Descriptors Form This form defines the digital link and the protocol to be used on the T1/E1 module or NSU. Reference Help > Contents > Forms Reference > Forms D to G > Digital Link Descriptors Note The Voice Encoding and Data Encoding values are different depending on whether you are using an NSU or T1/E1 Framer module. The following tables show the correct values. Parameter Voice Encoding Data Encoding Description Only valid for programming the voice encoding method of the: CEPT Formatter II DS1/T1 Formatter II (Universal T1/E1) NSU cards Possible values are: Nil for no change ADI for alternate digit inversion (even bits inverted) Invert for all bits inverted Inverted ADI for odd bits inverted NOTES: LA NSU (Universal T1/E1) is set to Inverted AD" when calling from the SX- 2000 FD to a 3300 ICP (DSU to NSU). NA NSU (Universal T1), set to Invert. NA NSU (Universal E1) direct connect to Universal E1, set to ADI. UK NSU (Universal E1), set to Nil. UK NSU (Universal T1) direct connect to Universal T1, set to Invert. Embedded PRI: T1 in NA and E1 in Europe are set to Nil by default. However, if you experience garbling on the trunks, set Voice Encoding to Invert. E1 in NA or T1 in Europe must have voice encoding set to ADI. Only valid for programming the data encoding method of the: CEPT Formatter II DS1/T1 Formatter II NSU cards Possible values are: Nil for no change ADI for alternate digit inversion (even bits inverted) Invert for all bits inverted Inverted ADI for odd bits inverted. 20-14 Digital Trunks_rev5.doc
Digital Trunks Assign a unique index number One end of the link is set to A and the other end set to B Program ISDN node for PRI For Dual T1/E1Framer only. If using ISDN cross-over cables, select LT. If using straight through cables, select NT. NT=Network Termination (default) LT=Line Termination 20-15
MCD for 3300 ICP Basic Installation and Maintenance Course Digital Links Form The descriptor is assigned to the digital links here. In this example, descriptor 3 is assigned to 7 1 2 1, which is the Dual T1/E1 Framer module in Controller Module position 2. MSDN/DPNSS/DASSII Trunk Circuit Descriptor Form This form defines the protocol to be used on each of the 23 channels. The system uses the MSDN/DPNSS protocol even though the link is set-up for ISDN/PRI. In this example, descriptor number 5 has been created. 20-16 Digital Trunks_rev5.doc
Digital Trunks Trunk Attributes Form This form defines how incoming calls are handled. Create a physical answer point, such as the operator console, by entering numbers in the Day, Night1, and Night2 fields. If the trunk is a DID trunk, leave the D/N1/N2 fields blank and program the Dial In Trunks Incoming Digit Modification fields as required. If the digits received from the exchange need to be modified, absorb digits and then insert digits as needed. This may be useful if the digits received do not match the DID extension range that you are using. Caution In the Trunk Attributes form, either fill out the three Non-dial In Trunk fields or fill out the Dial In Trunk fields, but never both. For dial-in trunks, if no digit absorption is required, you must put a zero in the Absorb field. If the DID range does not match the extension range at all, you may have to use the System Speed Call tables, with 1000 entries, to provide a look up table. 20-17
MCD for 3300 ICP Basic Installation and Maintenance Course Digital Trunks Form In this form, the 23 channels of the link are added to the database. Program a range of trunks by using a suitable trunk number, and then enter the Trunk Service number and Trunk Circuit Descriptor that were previously created. Select the first circuit of the NSU or T1/E1 module. In this example, the T1/E1 module PLID 7 1 2 1 has been selected. Select the first circuit, and then select Change. In this example, 23 trunks are being added by using range programming. The first trunk is 100 and is incremented by 1. The Trunk Service Number is 1 and the Circuit Descriptor Number is 5. 20-18 Digital Trunks_rev5.doc
Digital Trunks Network Synchronization Form All controllers need to have a master clock source in order to keep the digital T1 links in synchronization. This clock is usually provided on the link from the Service Provider. The Network Synchronization form can be programmed with multiple choices for the clock source. If the system has only a T1 ISDN PRI connection, then only the first clock source is programmed using the PLID of that link. If you have more than one T1 ISDN link, then program them as second, third, and so on. In the event that the first link fails, the system can still get the clock. Class of Service Options Form For the trunks to operate correctly and for incoming Calling Line information to display, the trunks must have options set in their COS. COS Options for Trunks 20-19
MCD for 3300 ICP Basic Installation and Maintenance Course Similarly, all extensions dialing out on these trunks must have options set in their respective COS. COS for Extensions 20-20 Digital Trunks_rev5.doc
Digital Trunks NSU Boot Process When programming the digital link of an NSU is complete, the software is downloaded from the controller into the NSU. If a serial cable is connected between the NSU and a PC running HyperTerminal, you can see the boot messages. The figure shows a capture of information from the serial port showing that the NSU was loaded with CEPT/DPNSS software and is being loaded with PRI software. SS_StartupTask Complete! Card's Datetag found: Dt: SX2KVDSU 11-APR-2002 15:22 [VER-1.1.0.15] Comparing datetags... Card's Tag : Dt: SX2KVDSU 11-APR-2002 15:22 [VER-1.1.0.15] Load's Tag : Dt: NSU_PRI 21-MAR-2002 16:30 [VER-1.1.0.7] SS: Initiated NSU Software Upgrade... Caution This process can take about 20 minutes. The NSU must not be interrupted. The status LEDs, L0 and L1 on the front of the NSU indicate what is happening: Yellow and Green alternating between L0 and L1 - downloading software, which takes about 15 to 20 minutes Yellow alternating between L0 and L1 - decompressing and loading software, which takes about 2 to 4 minutes. After the download is complete, the NSU should be rebooted. This download and reboot is only required once during installation. If the NSU programming is changed, such as from PRI to DNPSS, the process must be repeated. 20-21
MCD for 3300 ICP Basic Installation and Maintenance Course Dual T1/E1 Framer Boot Process The Dual T1/E1 Framer Module does not require a reboot after the digital trunk programming has been completed. Continue with programming the T1 ISDN protocol to the two links. If you are programming an NSU, go to the Programming the NSU s PRI/QSIG Protocol Using IMAT section of this module. 20-22 Digital Trunks_rev5.doc
Digital Trunks Programming PRI/QSIG on the Dual T1/E1 Framer Module Once the digital trunk programming forms are complete, continue with the ISDN menu options. Follow each menu item to program the ISDN PRI/QSIG protocol onto the links. 20-23
MCD for 3300 ICP Basic Installation and Maintenance Course ISDN Protocol Form In this example, the Dual T1/E1 Framer Module is in position 2 as assigned in the Controller Module Configuration form. Select the T1/E1 module, and select Change. Select the values as shown. If you are configuring the link as QSIG, set the Protocol accordingly and configure the other options. In the Outgoing Call Characteristics folder, the necessary protocols for ISDN PRI are set against the NSU or T1 Framer link. Use the defaults for: Bearer Capabilities High Layer Compatibility Calling Line Restriction. 20-24 Digital Trunks_rev5.doc
Digital Trunks DID Ranges for Calling Party Number (CPN) Substitution Form This form allows you to define the number that you send out onto the network that will be displayed as the CPN at the far end. By default, it is not enabled, so no number is sent. Create an index defining an extension range of who is making the outgoing call, and the number that will actually be sent. See the following example. The DID number range you have is 480-961-9xxx, but your extension numbering plan is 1xxx. When an extension in the range of 1000 to 1150 makes an outgoing call, CPN Substitution changes 1xxx to 9xxx. If the extension making the call is not in the index range, it is ignored. In this case, either no number is sent or, if it is programmed, a Default Voice CPN is sent. You can create as many indexes as required and use them on the same T1 link. In the UK and most of Europe, the CPN number must match the DDI range. If you use a default CPN, it must be a valid number for your business. Note CPN Substitution Form The index numbers are programmed here but are not enabled by default. You must enable them in the next form. Select the Dual T1/E1 Framer module and then select Add Member. Add the index number previously created. Select Change at the top of the form, and enter a default CPN number, if required. This number is used when any extension that is not covered by the index range makes a call. 20-25
MCD for 3300 ICP Basic Installation and Maintenance Course Programming the NSU s ISDN PRI/QSIG Protocol Using IMAT Once the Digital Trunk Programming is complete and the NSU has loaded, program the ISDN PRI or QSIG protocol into the NSU. From a PC, use the IMAT program to create a database and download it into the NSU. Any subsequent changes to programming are completed by pulling the database from the NSU, modifying it with IMAT, and downloading it back to the NSU. Connecting the IMAT PC The PC can be connected to the serial port of the NSU by using the Direct Cable Connection feature in Windows and a Dial-Up Networking connection. Note This option does not work with Windows 2000 Service Pack 4. The preferred method is to connect the PC directly to the Ethernet port of the NSU using a Category 5 crossover cable. The default IP address of the NSU is 192.168.1.1. If you are not connecting the NSU to the customer's LAN, you do not have to change the IP address of the NSU to match it; just directly connect the PC to the Ethernet port on the NSU. Installing and Launching IMAT The IMAT software is on the 3300 Software CD-ROM. Use the latest version of IMAT for the version of 3300 software that you are using. See the release notes for details. Install the IMAT program using the default options. The program appears in your PC s program list. Launch the program. The four options are: Connect to Remote Site - to establish a connection to the NSU New Database - to create a new database to load into the NSU later Load - to load a previously created database from the hard disk or from the NSU Save - to save a database to either the hard disk or to the NSU. 20-26 Digital Trunks_rev5.doc
Digital Trunks Creating a New IMAT Database From the File menu, select New Database. Select the system type for the 3300 ICP. Note that if you are working on a 3300 ICP and NSU at an older software release, you may need to select an earlier release number. See the release notes for that software release. Configuring the Options Select each available option under the Config menu. Use the Help button to get an explanation of the features and values. When making any changes to the options, you must click the Update button before closing the window. Site Options Set the System Type to Universal NSU and Connected Platform to 3300 ICP. If the link is to be configured as QSIG, select that option. 20-27
MCD for 3300 ICP Basic Installation and Maintenance Course PRI Link Characteristics Each link is programmed separately in this form. Set the Protocol Type to DMS 250 and the Physical Type to T1/CSU. Use the defaults accessed with the Characteristics button. Make sure you select the Update button to save the changes. Incoming Call Characteristics In this form, define how incoming calls are handled. Each link is programmed separately. DDI Delivery - set to yes or no depending on whether the link is for DDI or will have a fixed answer point, such as a console. CPN Delivery - defines whether the incoming Calling Party Number (CLI) will be shown on the 3300 display sets. Calling Party Number Prefix Insertion - Service providers remove the leading 1 of long distance calls before the CLI is sent to the 3300. This causes a problem with the Call Logs feature of the 5140 and 5240 phones where the user has to manually reenter this 1 to return a call. It will also affect any applications that need the full CLI. This option allows you to insert the 1 for long distance calls. It is not normal for the CLI to be presented on long distance calls, so this field is left blank. 20-28 Digital Trunks_rev5.doc
Digital Trunks CPN Substitution This form allows you to define the number that you send out onto the network that will be displayed as the CPN at the far end. By default, it is not enabled, so no number is sent. Create an index defining an extension range of who is making the outgoing call, and the number that will actually be sent. See the following example. The DID number range you have is 480-961-9xxx, but your extension numbering plan is 1xxx. When an extension in the range of 1000 to 1150 makes an outgoing call, CPN Substitution changes 1xxx to 9xxx. If the extension making the call is not in the index range, it is ignored. In this case, either no number is sent or, if it is programmed, a Default Voice CPN is sent. You can create as many indexes as required and use them on the same T1 link. In the UK and most of Europe, the CPN number must match the DDI range. If you use a default CPN, it must be a valid number for your business. Note The index numbers are programmed here, but they are not enabled by default. Enable them at the end of the next form. 20-29
MCD for 3300 ICP Basic Installation and Maintenance Course Outgoing Call Characteristics This form can be set-up in two ways: Per Call Bearer - each call is handled differently. Set the options at the top of the form to: Voice and Data - Null Fixed Network Specific Facilities - Unassigned Fixed Calling Line ID Restriction (CLIR) Voice and Data Null The NSU T1 card is now expecting to see 3 digits before the dialed number. These digits are inserted in the Digit Modification form. You set these values in the IMAT form, and then program them into the 3300 ICP. For example, set 000 in the 3300 ICP and make IMAT options: Per Call Bearer Capability - 0 (Speech) Per Call Network Specific Facilities - 0 (Telephony) Per Call CLIR - 0 (Allow) You can set the digits to various values that tell the card how to handle the call. 20-30 Digital Trunks_rev5.doc
Digital Trunks Fixed Bearer - all calls are treated the same way. Normally used in the UK. Set the options at the top of the form to: Fixed Bearer Capability Voice to Speech and Data to UDI Fixed High Layer Compatibility Telephony Fixed CLIR Voice to Allow and Data to Allow Enabling the CPN Substitution Index Select the Trunk CPN Tables Voice button. Enable the CPN Index numbers that were programmed earlier by selecting the relevant box next to the Index number. You can also program a Default CPN to be used by any extension making an outgoing call whose number is not caught by one of the programmed index numbers. 20-31
MCD for 3300 ICP Basic Installation and Maintenance Course Saving and Activating the Database Save the database, either to the C: drive on the PC to retrieve and edit later, or directly to the NSU. Select the destination from the drop-down Destinations box. Note The filename for saving to a PC cannot be more than 8 characters. When saving the database directly to the NSU, you must have already established a connection to it. The database is first compressed and then transferred to the NSU where it is extracted. Reset the NSU by using the Remote Site Reset option under the Maintenance Menu. The NSU resets and the links are established. LAN Connection to an NSU The NSU/Card must be connected with an RJ-45 Ethernet Cable that is connected to a Hub/switch within the LAN. The NSU/Card should reside on the same Subnet as the PC that requires Ethernet connectivity or the PC must have access to the Subnet where the NSU/Card resides. 20-32 Digital Trunks_rev5.doc
Digital Trunks Lab 1 Programming PRI Trunks In this lab, you will be using the following forms, in this order: Hardware > Modules > Controller Module Configuration form. Hardware > Framers > Dual T1-E1 Framers form. Trunks > Digital > Digital Link Descriptors form. Trunks > Digital > Digital Links form. Trunks > Digital > MSDN/DPNSS/DASSII Trunk Circuit Descriptor form. Trunks > Trunk Attributes form. Trunks > Digital > Digital Trunks form. Trunks > Digital > Network Synchronization form. Trunks > Digital > ISDN > ISDN Protocol form. System Properties > System Feature Settings > Class of Service Options form. Reference Help > Contents > System Programming > Trunks > Digital Trunks > Program Embedded PRI/QSIG Trunks 20-33
MCD for 3300 ICP Basic Installation and Maintenance Course This is the hardware setup in some lab environments. Consult the instructor. 20-34 Digital Trunks_rev5.doc
Digital Trunks Use this planning form to plan your programming. 20-35
MCD for 3300 ICP Basic Installation and Maintenance Course Step Task Expected Result 1 Navigate to the Hardware > Modules > Controller Module Configuration form. 2 Make sure that the module is programmed as a Dual T1-E1 Framer module. If it isn t, program it for one. 3 Navigate to the Hardware > Framers > Dual T1-E1 Framers form. 4 In the Dual T1-E1 Framers form: Assign an available unit number to the framer. Label the circuit. Select Save. The Controller Module Configuration form is displayed. The module is programmed as a Dual T1- E1 Framer. The Dual T1-E1 Framers form is displayed. The data is entered, saved, and displayed in the Dual T1-E1 Framers form. Step Task Expected Result 5 In the Dual T1-E1 Framers form, select Change Member. 6 In the Dual T1-E1 Framers change member window, select T1 from the Interface Type drop-down menu for both ports. Select Save. The Dual T1-E1 Framers change member window opens. The data is entered, saved, and displayed in the Dual T1-E1 Framers form. 20-36 Digital Trunks_rev5.doc
Digital Trunks Step Task Expected Result 7 Navigate to the Trunks > Digital > Digital Link Descriptors form. 8 To create a Link Descriptor for port 1 of the framer, select Add. Port 1 will be connected to the next node. 9 In the Digital Link Descriptors add window: Enter a number in the Number field. Select A from the Address for Message Control drop-down menu. Select ISDN Node from the Integrated Digital Access drop-down menu. Select the NT radio button for the Termination Mode. Select Save. The Digital Link Descriptors form is displayed. The Digital Link Descriptors add window opens. The data is entered, saved, and displayed in the Digital Link Descriptors form. 20-37
MCD for 3300 ICP Basic Installation and Maintenance Course Step Task Expected Result 10 To create a Link Descriptor for port 2 of the framer, which will be connected to the previous node, select Add. 11 In the Digital Link Descriptors add window: Enter a number in the Number field. Select B from the Address for Message Control drop-down menu. Select ISDN Node from the Integrated Digital Access drop-down menu. Select the LT radio button for the Termination Mode. Select Save. The Digital Link Descriptors add window opens. The data is entered, saved, and displayed in the Digital Link Descriptors form. 20-38 Digital Trunks_rev5.doc
Digital Trunks Step Task Expected Result 12 Navigate to the Trunks > Digital > Digital Links form. 13 Select Framer Port 1 and select Change: Label the Link Connection Lab Y to Lab Z Assign the first Link Descriptor you just created to Port 1. Select Save. 14 Repeat step 13 for Port 2. Label the Link Connection Lab Y to Lab X. The Digital Links form is displayed. The data is entered, saved, and displayed in the Digital Links form. The data is entered, saved, and displayed in the Digital Links form. 20-39
MCD for 3300 ICP Basic Installation and Maintenance Course Step Task Expected Result 15 Navigate to the Trunks > Digital > MSDN/DPNSS/DASSII Trunk Circuit Descriptor form. 16 To create the first Trunk Circuit Descriptor: Select Add. Enter a number in the Number field. Select Universal T1 from the Card Type dropdown menu. Verify the Dual Seizure Priority is Incoming. Select Local Office from the Far End Connection drop-down menu. Select Save. 17 To create the second Trunk Circuit Descriptor: Select Add. Enter a number in the Number field. Select Universal T1 from the Card Type dropdown menu. Verify the Dual Seizure Priority is Outgoing. Select Local Office from the Far End Connection drop-down menu. Select Save. The MSDN-DPNSS-DASSII Trunk Circuit Descriptor form is displayed. The data is entered, saved, and displayed in the MSDN- DPNSS-DASSII Trunk Circuit Descriptor form. The data is entered, saved, and displayed in the MSDN- DPNSS-DASSII Trunk Circuit Descriptor form. 20-40 Digital Trunks_rev5.doc
Digital Trunks Step Task Expected Result 18 Navigate to the Trunks > Trunk Attributes form. The Trunk Attributes form is displayed. 19 Select an available Trunk Service Number and select Change. 20 For Port 1 of the framer, change the following: Enter an available COS number in the Class of Service field. The COS is programmed later. Enter a 0 in the Dial In Trunks Incoming Digit Modification Absorb field. In the Trunk Label field, enter a label to identify this node goes to the next lab. Select Save. 21 Repeat steps 19 and 20 for Port 2. Label it to identify this node goes to the previous lab. The Trunk Service Number is selected and the Trunk Attributes change window opens. The data is entered, saved, and displayed in the Trunk Attributes form. The data is entered, saved, and displayed in the Trunk Attributes form. 20-41
MCD for 3300 ICP Basic Installation and Maintenance Course Step Task Expected Result 22 Navigate to the Trunks > Digital > Digital Trunks form. 23 Select an available Digital Trunk and select Change. 24 Select Circuit 1 and then select Change. Enter 23 into the Number of Records to Change field. Select the trunk number drop-down menu and select Increment. Enter the first Trunk Number in the Value to Change field. In this lab, use 1001. Enter a one in the Increment by field. Select Change All To from the Trunk Service Number drop-down menu. Enter Port 1 s Trunk Service Number previously created in the Value to Change field. Select Change All To from the Circuit Descriptor Number drop-down menu. Enter Port 1 s Circuit Descriptor Number previously created in the Value to Change field. Select Change All To from the Interconnect Number drop-down menu. Enter a one in the Value to Change field. Select Change All To from the Tenant Number drop-down menu. Enter a one in the Value to Change field. Select Save. 25 Repeat step 24 for Port 2. Use 1101 for the first trunk number. The Digital Trunks form is displayed. The Digital Trunk is selected and the Digital Trunk change window opens. The data is entered, saved, and displayed in the Digital Trunks form. 20-42 Digital Trunks_rev5.doc
Digital Trunks 20-43
MCD for 3300 ICP Basic Installation and Maintenance Course Step Task Expected Result 26 Navigate to the Trunks > Digital > Network Synchronization form. If the instructor designates your lab as the clock source, skip this programming. 27 Enter the PLID of any trunk on the framer that leads back towards the clock source via the fewest hops. This information is provided by the instructor or on the connection diagram. 28 If applicable in your classroom, program the IMAT database for the Universal NSU or for Embedded PRI/QSIG, program Protocols and Outgoing Call Characteristics according to your area. Consult the instructor. 29 Navigate to the Trunks > Digital > ISDN > ISDN Protocol form. 30 To assign a protocol to run over the T1 link on Port 1: Select Port 1. Select Change. Verify the Interface Type is T1 Select QSIG from the Protocol drop-down menu. Select the Network Side/QSIG Master check box. Enter a label into the Comment field. Select Save. 31 Repeat step 30 for Port 2. Do not select the Network Side/QSIG Master check box. The Network Synchronization form is displayed. The PLID for the clock source is entered. The IMAT database is programmed. The ISDN Protocol form is displayed. The data is entered, saved, and displayed in the ISDN Protocol form. The data is entered, saved, and displayed in the ISDN Protocol form. 20-44 Digital Trunks_rev5.doc
Digital Trunks Step Task Expected Result 32 Navigate to the System Properties > System Feature Settings > Class of Service Options form. 33 Program the trunks s COS that was used in the Trunk Attributes form by setting the following to Yes: DASS II OLI/TLI Provided Display ANI/ISDN Calling Number Only Display ANI/DNIS/ISDN Calling/Called Number Public Network Access Via DPNSS Public Trunk 34 Program the sets COS by setting the following to Yes: DASS II OLI/TLI Provided Display ANI/ISDN Calling Number Only Display ANI/DNIS/ISDN Calling/Called Number Public Network Access Via DPNSS Individual Trunk Access 35 Test your trunks using the Individual Trunk Access feature code. Enter the feature code and then the four digit trunk number. Because this is a PRI trunk you won t hear dial tone, so just dial a four-digit DN that is valid for that lab. Refer to the classroom maps or the instructor for the DNs to dial. The Class of Service Options form is displayed. The COS for trunks is programmed. The COS for the sets is programmed. Calls can be completed to and from each lab in the classroom. Errors can be caused by either end of the span. 20-45
MCD for 3300 ICP Basic Installation and Maintenance Course Lab 2 Monitoring T1 Links (Optional) Step Task Expected Result 1 In the maintenance command field, type EDT SHOW LINK INFO Type DTSTAT READ <PLID> Link availability and statistics are displayed in the response field 2 Type DTSTAT CLEAR <PLID> Resets link performance statistics to zero. 3 Type NETSYNC SETSOURCE <NUMBER/FREERUN/AUTO> <NUMBER> - forces the system to synch to the source specified by number. This is the number from the Network Synchronization form. <FREERUN> - forces the system to ignore all other synch sources and run at its own speed <AUTO> - directs the system to synch to the best available source from the sources listed in the Network Synchronization form. 4 Type NETSYNC SUMMARY 1 Displays the current state of the assigned synch sources from the perspective of the main controller. 5 Type TEST HYBRID <PLID> The entire link must be busied before using this command. Tests the T1 hybrid at its output. 20-46 Digital Trunks_rev5.doc