
122 Chapter 6 Setting up VoIP trunks for outgoing calls
P0609327 02
Example: A private network configured for fallback
This section walks through a sample Business Communications Manager configuration, including:
• “System programming for networking and fallback routes” on page 123
• “Making calls through a private VoIP network gateway” on page 125
• “Connecting an i200X telephone” on page 125
In this scenario, shown in the following figure, two Business Communications Managers in
different cities are connected through a WAN. One Business Communications Manager resides in
Ottawa, the other resides in Santa Clara. Both VoIP trunks and an PRI SL-1 line connect the
system in a private network.
Figure 40 Example PSTN fallback
Business Communications Manager Santa Clara Business Communications Manager Ottawa
• Private IP address: 10.10.5.1 • Private IP address: 10.10.4.1
• Public IP address: 47.62.84.1 • Public IP address: 47.62.54.1
• DNs 3000-3999 • DNs 2000-2999
Ottawa
Santa Clara
IP network
PSTN
DN 3322
Gateway destination
digit (Ottawa): 2
Route 867 (VoIP)
Route 774 (PRI line)
Route 009 (PSTN
line) with external
#1613555
Destination code: 2
Route 867, absorb 0
Route 774, absorb 0
Destination code: 9
Route 009, absorb 1
DN 2244
Gateway destination
digit (Santa Clara): 3
Route 867 (VoIP)
Route 774 (PRI line)
Route 009 (PSTN line)
with external
#1408555
Destination code: 3
Route 867, absorb 0
Route 774, absorb 0
Destination code: 9
Route 009, absorb 1
Dialout:
14085553322
Dialout:
3322
Dialout:
16135552244
Dialout:
2244
Gateway: 2
Gateway: 3
(Packet Data Network)
(Public fallback line)
Kommentare zu diesen Handbüchern