Problems With Trunk Cartridges Service - Nortel ICS Install Manual

Problems with trunk cartridges
service
Check first for user problems, then wiring and programming
errors before replacing Norstar equipment.
1. Check that the cartridge is properly inserted in the ICS or
Trunk Module.
2. Run a Maintenance session to ensure that the cartridge is
not disabled.
If the problem persists:
If the Trunk Cartridge is installed in the ICS and the AC power
is present and the LED indicator on the ICS is off, replace the
ICS.
If the Trunk Cartridge is installed in a Trunk Module:
1. If AC power is present and the LED indicator on the Trunk
Module is off, replace the Trunk Module.
2. Replace the fiber cable.
3. Replace the Trunk Cartridge.
4. Replace the Expansion Cartridge.
5. Replace the ICS.
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Problems with trunk cartridges service / 611

Notify service provider of T1 or PRI signaling
disruption.
Notify your T1 or PRI service provider before
disconnecting your T1 or PRI lines, removing
power to your system, or performing any other
action that disrupts your T1 or PRI signaling.
Failure to notify your T1 or PRI service provider
may result in a loss of T1 or PRI service.
Modular ICS 7.1 Installer Guide