Nortel Networks Remote Gateway 50 - Manual (Page 219)

Dialing Plan configuration Page 219 of 258
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
Calling from the SRG to the main office, in Normal Mode
In this scenario, a telephone registered at the SRG calls an SRG IP Phone and
a main office IP Phone registered to the main office. Figure 76 shows this
scenario.
Figure 76
WAN is up. SRG analog phone calls an SRG IP Phone and a main office
IP Phone registered to the main office (Normal Mode)