Nortel Remote Gateway 50 Configuration Manual page 123

Table 15
Provisioning details for this case (Part 2 of 2)
Region
1, 2, 3
1, 2, 3
1
1
1
1
2,3
Call between two local branch offices
Figure 38 on
offices.
Main Office Configuration for Survivable Remote Gateway 50
Bandwidth Management
All CDP numbers must be sufficiently long to allow unique
termination of the calls. That is, every main office/branch
office region requires its own LSC to ensure that all numbers
are unique.
Prefixes for branch offices for regular calls are required. May
have additional prefixes for E-911 calls, if required, or may
share prefixes.
All branch offices are provisioned at the NRS to route all calls
through the main office.
Main office sends all CDP calls to destinations that are not its
own branch office to the NRS with unchanged dialled digits.
Main office sends all CDP calls to destinations that are its own
branch office to the NRS with a specific gateway prefix in front
of the dialled digits.
All branch offices delete the prefix and terminate the calls.
May be to a local set or to a trunk.
Similar configuration, as above, applies to regions 2 and 3.
page 124 shows the call flow of a call between two local branch
Provisioning detail
Page 123 of 258
Configuration Guide