Nortel Remote Gateway 50 Configuration Manual page 213

Call scenarios
Common call scenarios for this CDP option are listed in "Call scenarios" on
page 194. The following additional call scenarios are unique to this CDP
option:
• Normal Mode: An SRG analog phone calls an SRG IP Phone and a main
office IP Phone registered to the main office
In this scenario, the telephone registered to the SRG can either dial the
SRG DN or the main office DN for the SRG IP Phone. In Local Mode,
the SRG IP telephone is reached only with the SRG DN.
In Normal Mode, the display on the IP Phone displays the main office
DN (3xxx) for the IP Phone. In Local Mode, the SRG DN (4xxx) is
displayed.
Figure 73 on
Main Office Configuration for Survivable Remote Gateway 50
Dialing Plan configuration
page 214 shows this scenario.
Page 213 of 258
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Configuration Guide