Nortel Modular Ics 6.1 Installer Guide

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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...

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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 —...

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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...

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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....

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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....

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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...

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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...

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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...

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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...

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....