Nortel Networks Remote Gateway 50 - Manual (Page 99)

Bandwidth Management Page 99 of 258
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
Figure 21
Call flow for Scenario 1 - local call
1 The branch office user dials 6-395-3456. The system transmits 395-3456
to the NRS. The NRS checks its provisioning, and determines that all
calls are to be sent to the main office; it directs the call to the main office.
2 The branch office sends the call to 395-3456 to the main office.
3 The main office determines that this is LOC 39534, to another branch
office, with gateway routing prefix 552. The system inserts the prefix and
transmits 552-395-3456 to the NRS. The NRS checks its provisioning,
and determines that all calls to prefix 552 are to be sent to branch office
A2; it directs the call to the branch office.
4 The main office sends the call to 552-395-3456 to the branch office. The
branch office deletes the prefix and the HLOC, and rings set 3456.