Nortel Modular ICS 7.1, Инструкция по установке

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Problems with lines /
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N0130943 02 Modular ICS 7.1 Installer Guide
10. If you still cannot make external calls, power down, then
power up the system. This should be done after business
hours to avoid losing calls.
11. To check the line, contact your service provider or central
office.
Dial tone absent on external lines
1. Use Button Inquiry (
≤•‚
) to display the number of
the external line you are testing.
2. Check for dial tone using a test telephone at the
connections for the external line on the distribution block.
3. Make sure that a Trunk Cartridge for the line is properly
installed in the ICS or Trunk Module.
4. Make sure that the Trunk Module fiber cable is properly
connected to the Expansion Cartridge on the ICS.
Refer to
Problems with trunk cartridges service on page
611 and Trunk or Station Module down on page 619.
5. Run a Maintenance session to ensure that the line is not
disabled. See Port/DN status on page 530.
Notify service provider of T1 signaling
disruption.
Notify your T1 service provider before
disconnecting your T1 lines, removing power to
your system, or performing any other action that
disrupts your T1 signaling. Failure to notify your
T1 service provider may result in a loss of T1
service.