Nortel BCM50 Configuration Manual page 372

372 Chapter 43 VoIP trunk gateways
Figure 113 Calling into a remote node from a public location
Santa Clara
DN 3322
System A
Gateway: 2
Gateway destination digit: 2
Route 022 (VoIP)
DN type: Private
Destination code: 2, using route 022
Absorb length: 0
Ensure VoIP trunk is set up with remote filters
Call process
Based on Figure
1
A home-based employee in Santa Clara wants to call someone in Ottawa, so they dial into the
local BCM network using the access code for an unsupervised trunk (not VoIP trunks) and the
destination code and DN for the person they want to reach on System B.
2
When the call is received from the public network at System A (Santa Clara), the system
recognizes that the received number is not a local system number. The call is received as a
public call.
3
System A has a route and destination code that recognizes the received number and destination
code as belonging to the route that goes to System B (Ottawa). System A passes the call to
System B over a dedicated trunk, in this case, a VoIP trunk. This call is now designated as a
private call type.
NN40020-603 NN40020-603
PSTN
Dial in:
XXX-2244
Dialout:
2244
IP network
dedicated VoIP trunk private network
113, this is how the call would progress:
Dialin:
XXX-2244
Ottawa
Target line XXX recognizes 2244
DN 2244 assigned with target line XXX
System B
Gateway: 3
DN 2244
Remote gateway set up
to Santa Clara
CDP system code for
Ottawa: 2