Nortel Modular Ics 6.1 Installer Guide

Provisioning BRI and PRI lines / 551
P0603534  02Modular ICS 6.1 Installer Guide
Deprovisioning a lineInstaller password required
Deprovisioning all of the lines on a DTI does not disable the 
cartridge.
Disabling a PRI ChannelInstaller password required
PRI channels can be disabled. However, there is no association 
between a line number and a b-channel. Disabling a b-channel 
can be done when you have fractional PRI. See Working with 
fractional PRI on page 567. 

552 / Tests
Modular ICS 6.1 Installer GuideP0603534  02
Tests
Norstar allows you to run tests which verify the integrity of the 
installation wiring for the telephones. 
In addition, you can evaluate the transmission quality of a BRI 
loop through your service provider using a loopback test to 
evaluate different aspects and segments of the T1 digital 
transmission path. You can only run one loopback test at a 
time on any one DTI.
Loopback tests for T1 or ISDN-PRI lines
Installer password required
The...

Tests / 553
P0603534  02Modular ICS 6.1 Installer Guide
Line loopback
The line loopback test loops the full 1.544 Mbps signal 
received from the network back to the network. The looped 
signal is regenerated without any change in the framing format 
and without the removal of any bipolar violations. The line 
loopback test can also be invoked and stopped remotely using 
the in-band signal or via the facility data link (FDL) in 
extended super frame (ESF) format.
The line loopback test must be run in...

554 / Tests
Modular ICS 6.1 Installer GuideP0603534  02
Payload loopback
The payload loopback test loops the received information bits 
(192 per frame) back to the network. The payload loopback 
test can also be invoked and stopped remotely via the facility 
data link (FDL) in extended super frame (ESF) format. 
The payload loopback test must be run in coordination with the 
T1 service provider. Some test patterns can cause the DTI to 
reset. To avoid this, start the payload loopback test from your...

Tests / 555
P0603534  02Modular ICS 6.1 Installer Guide
Card edge loopback
The card edge loopback test loops the outgoing signal on the 
DTI back to its internal received signal path. Signal paths to 
the external network are disconnected.
Continuity loopback
Norstar ICS
T1
network
Norstar ICS
T1
network
Norstar ICS
T1
network
Norstar ICS
T1
network 

556 / Tests
Modular ICS 6.1 Installer GuideP0603534  02
The continuity loopback test shorts the tip and ring pair of the 
receive signal path with the transmit signal path. This test 
allows you to check the metallic continuity of the external 
wiring.
Tests initiated from Norstar
You can start and stop Loopback tests in Maintenance 
programming under the heading Loopback tests. You can 
also push a button on the DTI faceplate to start and stop the 
continuity test.
You can run DTE and DS30 Loopback...

Tests / 557
P0603534  02Modular ICS 6.1 Installer Guide
Starting a loopback tests Installer password required
Start with the display showing Loopback tests:.
1. Press ≠. Show Module: displays.
2. Press ‘. Cards on KSU displays.
If you want to test cartridges on another module, press  
‘ until the display shows the module.
3. Press ≠. Cd1-KSU displays.
If you want to test the second cartridge on the KSU, press 
‘
. The display shows Cd2-KSU.
4. Press ≠.
If there is an analog cartridge in the slot or the...

558 / Tests
Modular ICS 6.1 Installer GuideP0603534  02
Operating a Continuity loopback test
Installer password required
You start the Continuity loopback test by pressing the button 
on the front of the DTI. Calls on all lines on the cartridge are 
automatically dropped when a loopback test is invoked. 
• The red LED above the button remains on until the test is 
canceled.
• Invoking a continuity loopback test automatically cancels 
any other test in progress.
• To stop the continuity loopback test,...

Tests / 559
P0603534  02Modular ICS 6.1 Installer Guide
Operating a payload loopback testInstaller password required
Start with the display showing Loopback tests:.
1. Press ≠. Show Module: displays.
2. Enter a module number or press LIST
 to scroll through 
modules. Cards on KSU or Card on Mod X displays.
3. If you want to test cartridges on another module, press 
‘ until the display shows the module.
4. Press ≠. Cd1-KSU or Cd1-ModX displays.
If you want to test the second cartridge on the KSU, press 
‘...

560 / CSU stats
Modular ICS 6.1 Installer GuideP0603534  02
CSU stats
Each DTI is equipped with an internal channel service unit 
(CSU). When enabled, the internal CSU monitors the quality 
of the received T1 signal and provides performance statistics 
and diagnostic information.
DTIs must be individually programmed to establish 
parameters for collecting and measuring transmission 
performance statistics by the CSU. 
StatisticsInstaller password required
The CSU provides both performance and alarm...