Routing Calls Through A Tandem Network - Nortel BCM50 Configuration Manual

324 Chapter 35 Private networking: PRI and VoIP tandem networks
The following tables show the routing tables for Node A and Node C for external and internal
terminating calls.
Table 65 Node A destination code table, external termination
Route
4 (PSTN)
3 (Node B)
4 (PSTN)
4 (PSTN)
4 (PSTN)
4 (PSTN)
* This wild card represents a single digit.
Table 66 Node A destination code table, internal termination
Route
3 (Node B)
5 (Node C)
Table 67 Node C destination code table, external termination
Route
3 (Node B)
3 (Node B)
4 (PSTN)
4 (PSTN)
4 (PSTN)
4 (PSTN)
4 (PSTN)
4 (PSTN)
4 (PSTN)
Table 68 Node C destination code table, internal termination
Route
5 (Node A)
5 (Node A)

Routing calls through a tandem network

The following provides a step-by-step description of how calls network through a tandem network:
NN40020-603 NN40020-603
Absorb length Destination code (public DNs)
1 91604
0 91403762 (Node B)
1 9140376* (not internal network)
1 914037* (not internal network)
1 91403* (not internal network)
1 9* (not internal network)
Absorb length Destination code (private DNs)
0 392 (Node B)
0 393 (Node C)
Absorb length Destination code (Public DNs)
0 91613764 (Node D)
0 91613766 (Node F)
1 9161376* (not internal network)
1 916137* (not internal network)
1 91613* (not internal network)
1 9161* (not internal network)
1 916* (not internal network)
1 91* (not internal network)
1 9 (not internal network)
Absorb length Destination code (Private
DNs)
0 391 (Node A)
0 392 (Node B)