Nortel Modular Ics 6.1 Installer Guide
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Hardware / 501 P0603534 02Modular ICS 6.1 Installer Guide D-packet servce 1. Press ≠ to view and program D-packet service for T or NT loops. You can have two D-packet service configurations for each BRI card. 2. Press CHANGE to turn D-packet service for this loop on (Y) or off (N). Lp 1. Select the S loop (for BRI-S/T cards) or LT loop for BRI-U2 or BRI-U4 cards that supports the D-packet service. 2. Press C H AN G E to move through a list of the loops which are available on this card. Note: If only one loop is available, you will not see CHANGE . Tips - If our service provider does not specify the call type for each Network DN, it is probably available for both voice and data. Check with your service provider if you are not certain about the proper configuration. Tips - An LT loop must already be assigned.
502 / Hardware Modular ICS 6.1 Installer GuideP0603534 02 TEIs Press ≠ to view and program the Terminal Endpoint Identifiers (TEIs). Each TEI is supplied by your service provider and is associated with an ISDN D-channel packet device. No TEIs on loop Press ADD to program up to eight TEIs to this loop. Sampling Press CHANGE to select the sampling used by an S loop: •Fixed — select if two or more S-interface devices use the loop and the length of the loop is less than 200 m (650 ft.). •Adaptve — select if two or more S-interface devices use the loop and the length of the loop is greater than 200 m (650 ft.), select Adaptve. If one S-interface device is using the loop, the length of the loop can be up to 1000 m (3,250 ft.) and the rate should be set to Adaptve. The BRI card must be disabled under Module status in Maintenance programming, before you can change this setting. You can change the setting if the card has not yet been installed in the ICS slot.
Hardware / 503 P0603534 02Modular ICS 6.1 Installer Guide DNs on LoopInstaller password required Press ≠ to view and program the ISDN DNs assigned to the loop. Assign DNs 1. Press ≠ and enter the ISDN DN you wish to assign to this loop, or press SCAN to move through a list of DNs already assigned to the loop. The display shows: •Availabl, Assigned — assigned to this loop •*Lpnnn* — assigned as the default DN of another loop •Lpnnn — assigned to another loop 2. Press LIST to view the DNs assigned as ISDN DNs. The default ISDN DN range is 667-696. For information about changing ISDN DN type, see Changing Companion DN type on page 449. 3. Press CHANGE to assign the DN to the loop or to remove it. Loop DN Press CHANGE to move through the ISDN DNs you have assigned to the loop. This will assign the main ISDN DN to the loop. You can also set Loop DN to None.
504 / Hardware Modular ICS 6.1 Installer GuideP0603534 02 Clock SrcInstaller password required Systems with digital interfaces need to synchronize to the network in order to function. Synchronization is performed in a hierarchical way, where each device/switch obtains the network clock from the device/or switch above it in the synchronization hierarchy and passes the network clock to the device/switch below it in the synchronization hierarchy. The synchronization levels are referred to as strata. Norstar systems are stratum 4E equipment and are usually used as termination points in a network. For each on-core DTI, choose one of the following settings: •Primary reference: The DTI obtains the timing reference from the network, to which the system synchronizes. This is the default value for the DTI in slot 1 in the ICS. If the system is configured with a DTI card that has been configured as PRI, the setting should be set to Primary. •Secondary reference (Secndry): The DTI acts as a standby reference. If there are excessive errors on the primary reference T1 link, or the DTI designated as primary reference fails, this DTI will obtain the timing reference from the network, which the system synchronizes to. This is the default value for the DTI in slot 2 in the ICS. •Timing master (TimeMst): The DTI does not obtain timing from the network, but transmits the systems timing to equipment connected to it. WARNING: An off-core DTI needs to be left on free run
Hardware / 505 P0603534 02Modular ICS 6.1 Installer Guide The following illustrations show some typical network configuration and the appropriate clock source settings for your DTIs. Tips - If a BRI card becomes clock source, it will have up to four clock sources available (T, S, U-NT, NT loops only). Only when all four clock sources have an alarm will the card cause a switch to the secondary or hold-over state. BRI -T, S, and U-NT interface loops may be autonomously powered down by the network. This will be treated as a loss of clock source on that loop. The installer should ensure that clock source loops are either not powered down or are among the last to be powered down. If BRI cards are used only for S-loops, a Service Card is required only if the DTI is T1. However, a Services Card is recommended when a T1 is not used, since the card improves clock accuracy and performance. If BRI cards are used off-core, they still require a connection to the network, which requires the SC, and an on-core digital clock source. For more information about network synchronization, consult the appropriate private digital network synchronization standards.
506 / Hardware Modular ICS 6.1 Installer GuideP0603534 02 Norstar connected directly to the service provider in a T1 network Norstar connected to another switch or MUX in a T1 or PRI network Primary - DTI 1 obtains the timing from the service provider Secondary - DT12 acts as a standby to obtain the timing from the service provider Norstar ICS T1 or PRI service provider Norstar ICS Primary - DTI 1 obtains the timing from the network Secondary - DTI 2 acts as a standby to obtain the timing from the network T1 service provider Other switch or MUX in networkNorstar ICS T1 or PRI service provider Primary - DTI 1 obtains the timing from the network Secondary - DT12 acts as a standby to obtain the timing from the networkOther switch or MUX in network
Hardware / 507 P0603534 02Modular ICS 6.1 Installer Guide Norstar connected to another switch in a closed T1 or PRI network Norstar connected in a series of switches in a T1 or PRI network T1 or PRI service provider Norstar ICS Norstar or other switch Primar y - DTI 1 obtains the timing from the T1 service provider Secondary - DTI 2 acts as standby to obtain timing from the networkSecondary - DTI 2 acts as standby to obtain timing from the networkPrimary - DTI 1 obtains the timing from the T1 service provider Norstar ICS Primary - DTI 1 obtains the timing from the T1 service provider Timing master - DTI 1 transmits the systems timing to the other switch T1 service provider Norstar or other switch Primary reference T1 or PRI service provider Primary referencePrimary - DTI 1 obtains timing from T1 service provider Timing Master - DT1 1 transmits system timing to other switch Norstar or other switch Norstar ICS
508 / Hardware Modular ICS 6.1 Installer GuideP0603534 02 Norstar connected by a T1 link to another switch in an analog network Setting the clock source for DTIs and PRI Start with the display showing Hardware. 1. Press ≠. 2. Press ‘. The display shows Cards on KSU. 3. Press ≠. 4. Press ‘ until the display shows the card you want to view. Changing clock source may disconnect calls. Changing the clock source for your system may cause your system to restart itself, resulting in dropped calls. Choose a suitable time to change the clock source and use the Page feature to inform people of possible service disruptions. Norstar or other switch Norstar ICS Primary - DTI obtains timing from other switchTiming master - DT1 transmits system timing to the other switch
Hardware / 509 P0603534 02Modular ICS 6.1 Installer Guide 5. Press ≠. 6. Press ‘ until the display shows ClockSrc. 7. Press CHANGE to toggle the setting. 8. Press ® to exit or ‘ to continue in Hardware. T1 or ISDN-PRI configurations The following tables indicate proper and improper T1 or ISDN-PRI configurations: Valid digital trunk configurations Tips - In most T1 network configurations, you need one DTI or DTI card configured as PRI in your ICS to act as a primary reference. The only application where you might not have a DTI or a DTI card configured as PRI designated as primary reference is in a network where your Norstar system is connected back-to-back with another switch using a T1 link. If the other switch is loop-timed to your Norstar system, your DTI or DTI card configured as PRI can be designated as a timing master. Tips - (continued) If your Norstar system has two or more DTIs, you cannot assign more than one DTI as primary reference or all of the DTIs as secondary reference. You can only have one primary reference and one secondary reference per system. See T1 or ISDN-PRI configurations for more information. Option 1 Option 2 Option 3 Card 1T1 or PRI T1 or PRI BRI-ST, BRI-U2, BRI-U4 Secondary Card 2T1 or PRI BRI-ST, BRI-U2, BRI-U4BRI-ST, BRI-U2, BRI-U4
510 / Hardware Modular ICS 6.1 Installer GuideP0603534 02 Invalid digital trunk configuration Valid mixed trunking configuration Invalid mixed trunking configuration Invalid configurations will raise an alarm. In these invalid configurations, digital links are likely to suffer errors, slips, etc. DataModInstaller password required Mod XX:DataMod DataMod allows you to configure the settings for any data modules you may have on your system. Type The display shows the type of data module selected. Option 1 Primary Card 1BRI-ST, BRI-U2, BRI-U4 Secondary Card 2T1 or PRI Option 1 Option 2 Primary Card 1T1 or PRI BRI-ST, BRI-U2, BRI-U4 Card 2Analog Analog Option 1 Option 2 Card 1Analog Analog Secondary Card 2T1 or PRI BRI-ST, BRI-U2, BRI-U4