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82 IP Phone Key Expansion Module (KEM)

Table 15

Startup initialization process for the IP Phone KEM

Phase Description

1. IP Phone KEM performs

self-test

The self-test confirms the operation of the IP Phone KEM local

memory, CPU, and other circuitry. While undergoing this self-test,

the IP Phone KEM display lights up.

If the IP Phone KEM display does not light up, or lights up and then

goes blank, or fails to begin flashing, check that the IP Phone KEM

is correctly installed and configured.

2. IP Phone KEM

establishes communication

with the IP Phone

The IP Phone KEM display flashes until it establishes

communication with the IP Phone.

If the IP Phone KEM display does not stop flashing, communication

has not been established with the IP Phone. Check that the IP

Phone KEM is correctly installed and configured.

3. IP Phone KEM

downloads keymaps

The key labels download to the IP Phone KEM. During the

download, the display is blank.

When the three phases complete successfully, you are ready to use the

additional line/feature keys on your IP Phone KEM.

If you have a second IP Phone KEM installed on your IP Phone, the one to

the immediate right of the IP Phone must be functional for the subsequent

IP Phone KEM to work. This is because the second IP Phone KEM

receives its power, and communicates with the IP Phone, through the first

IP Phone KEM.

Operating parameters

General

If an IP Phone KEM is not responding, and lines or features are configured

on keys 32 to 79, calls can be directed to those keys which the user

cannot access. This means the IP Phone 2002 or IP Phone 2004 rings but

the call cannot be answered. In such cases, the incoming call receives

Call Forward No Answer (CFNA) treatment.

IP Phone 2002

If only one IP Phone KEM is configured in LD 11, but two IP Phone KEMs

are detected on an IP Phone 2002, the second IP Phone KEM is ignored.

An error message displays to alert the administrator that the hardware

configuration does not match the administered configuration.

If two IP Phone KEMs are configured in LD 11, but only one IP Phone

KEM is responding, the keys on the second IP Phone KEM are available

for call processing but are not accessible to the user. This means that

Nortel Communication Server 1000

IP Phones Fundamentals

NN43001-368 05.06 30 April 2010