Nortel Networks Remote Gateway 50 - Manual (Page 205)

Dialing Plan configuration Page 205 of 258
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
• Set the destination code for the VoIP trunk to 30 (retain all digits) or 34
(remove first digit). For example, BUID dialout = 342XX.
The VoIP route destination codes 30 (no digits dropped) and 34 (1 digit
dropped) route any call that starts with 30 or 34 out of the system over
the VoIP trunk to the main office.
The main office access code length is still 0.
• Assign the telephones registered to the SRG (IP Phones or analog
[500/2500-type]) telephones to a different range, such as 40XX. Refer to
the NRS configuration above.
The users in both the main office and the SRG dial only the DN for all
telephones in the main office and the SRG in both Normal Mode and
Local Mode.
For more information on configuring the main office and NRS, refer to
Branch Office: Installation and Configuration (553-3001-214) and IP Peer
Networking: Installation and Configuration (553-3001-213). For more
information on configuring the SRG, refer to SRG50 Configuration Guide.
Option 2: DN ranges in the main office and SRG overlap; DNs for
SRG IP Phones are the same in Normal and Local Mode
In this configuration, the SRG DNs overlap with the main office DNs.
However, since SRG does not support Vacant Number Routing (VNR), a user
registered to the SRG must dial a destination code before the main office DN
to call a main office telephone.
To call an SRG IP Phone in either Normal or Local Mode, SRG and main
office users need to dial only the DN for the SRG IP Phone. SRG IP Phone
calls are forwarded with the main office Private Network ID/destination code
appended to the BUID, which allows the call to flow to the VoIP trunks for
the main office.
This configuration is not a true CDP dialing plan. A destination code is added
by the system to properly direct the SRG IP Phone calls, since the start digits
of the DN are not unique for SRG and main office users. Users dialing a
telephone registered at the main office must dial a destination code before the
main office DN. This plan allows all systems on the network to appear to be
available within a range of numbers.