- Nortel Communication Server IP Phone 2007 User Guide

Additional phone features
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Using Media Gateway 1000B
The Media Gateway 1000B (MG 1000B) phone can operate in Normal or
Local Mode.
Normal Mode
The phone registers with the Main Office and receives phone services
from the Main Office. At any time during Normal Mode, you can check
local mode functionality (make and receive calls) by enabling Local Mode
and returning to Normal Mode. After testing, you can return to Normal
Mode by using the Resume Normal Mode command or by waiting for ten
minutes.
Local Mode
If the WAN connection goes down, the IP Phone loses communication
with the Main Office Terminal Proxy Server (TPS). The IP Phone then
registers with the MG 1000B and receives phone services from the
MG 1000B. Features such as Personal Directory, Redial List, and Callers
List are not available when operating in local mode. Local Mode appears
on the phone display when in local mode.
Using Test Local Mode
Use the Test Local Mode feature to check local mode functionality (make
and receive phone calls). This is useful when provisioning has changed
for an IP Phone on an MG 1000B Controller.
1. Tap the Services soft key.
2. Press the Up/Down navigation keys to
scroll and to highlight Test Local Mode.
3. Tap the Select soft key (the phone
resets and registers to the branch office).