Linking Pbx Users With E&M Trunk Lines - Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual

Appendix C VoIP Configuration Examples
Linking PBX Users with E&M Trunk Lines
Figure C-2 Linking PBX Users with E&M Trunk Lines (Example)
Dial peer 1
Voice port
POTS
(408)
PBX
555-4001
Dial peer 2
POTS
(408)
555-4002
San Jose
(408)
Note
OL-2031-02
The following example shows how to configure VoIP to link PBX users with
E&M trunk lines.
In this scenario, a company decides to connect two offices: one in San Jose,
California, and the other in Salt Lake City, Utah. Each office has an internal
telephone network using a PBX connected to the voice network by an E&M
interface. Both the Salt Lake City and the San Jose offices are using E&M Port
Type II, with four-wire operation and Immediate Start signaling. Each E&M
interface connects to the Catalyst 4224 using two voice interface connections.
Users in San Jose dial 801-555 and then the extension number to reach a
destination in Salt Lake City. Users in Salt Lake City dial 408-555 and then the
extension number to reach a destination in San Jose.
Figure C-2 illustrates the topology of this scenario.
172.16.1.123 172.16.65.182
0/0
IP cloud
V
Catalyst 4224 SJ
Catalyst 4224 SLC
Voice port
0/1
This example assumes that the company has already established a working IP
connection between its two remote offices.
Catalyst 4224 Access Gateway Switch Software Configuration Guide
Dial peer 3
Voice port
POTS
0/0
PBX
V
Dial peer 4
Voice port
0/1 POTS
Salt Lake City
(801)
(801)
555-3001
(801)
555-3002
C-7