Nortel Remote Gateway 50 Configuration Manual page 121

In Figure 36, the second half of the call is shown (destination side of the call).
Figure 36
Call flow for Scenario 2 – call to remote branch office (destination side)
1 The main office B deletes the HLOC, and determines that this is to a local
branch office. The system transmits 3456 to the NRS. The NRS checks
its provisioning, and determines that for this CDP region this call goes to
branch office B1.
2 The main office sends the call to 3456 to the branch office. The branch
office rings set 3456.
Main Office Configuration for Survivable Remote Gateway 50
Bandwidth Management Page 121 of 258
Configuration Guide