Nortel Networks BCM 4.0 - Manual (Page 3)

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IP Key Expansion Module (KEM) User Guide
About the Key Expansion Module (KEM)
This document describes the Nortel IP Phone Key Expansion Module (KEM) and how to use it
with the Nortel IP Phone 2002 and Nortel IP Phone 2004.
Description
The IP Phone KEM is a hardware component that connects to the IP Phone 2002 and IP Phone
2004 and provides additional line appearances and feature keys. See Figure 1 on page 3.
The IP Phone KEM provides 24 additional programmable keys (with labels) for your IP Phone
2002 or IP Phone 2004. The IP Phone KEM keys are displayed in two columns of twelve keys on
either side of a central Liquid Crystal Display (LCD).
Up to two IP Phone KEMs can be attached to an IP Phone 2002 or IP Phone 2004. With two IP
Phone KEMs attached, the IP Phone can have up to 48 programmable keys.
When an IP Phone KEM is installed on an IP Phone 2002 or IP Phone 2004, the controls on the IP
Phone affect both the IP Phone and the IP Phone KEM.
Figure 1 IP Phone KEM
Features
The IP Phone KEM has the following features:
• 12 keys on each side of an LCD provides up to 24 additional self-labeled programmable keys.
Using the Shift key functionality, an IP Phone 2004 can have up to 48 additional logical