Cisco 3600 Series Configuration Manual - Page 31

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Cisco 3600 Series Configuration Manual
Linking PBX Users with E&M Trunk Lines
The following example shows how to configure Voice over IP to link PBX users with E&M trunk
lines.
In this example, a company wants 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 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 ImmediateStart signaling. Each E&M interface connects
to the router using two voice interface connections. Users in San Jose dial "8-569" and then the
extension number to reach a destination in Salt Lake City. Users in Salt Lake City dial "4-527" and
then the extension number to reach a destination in San Jose.
Figure 13 illustrates the topology of this connection example.
Figure 13
Note
between its two remote offices.
Configuration for Router SJ
Linking PBX Users with E&M Trunk Lines Example

Dial peer

Voice port

1 POTS
1/0/0
PBX
Router SJ
Dial peer
Voice port
2 POTS
1/0/1
San Jose
(408)
This example assumes that the company already has established a working IP connection
hostname sanjose
!Configure pots dial peer 1
dial-peer voice 1 pots
destination-pattern 555....
port 1/0/0
!Configure pots dial peer 2
dial-peer voice 2 pots
destination-pattern 555....
port 1/0/1
!Configure voip dial peer 3
dial-peer voice 3 voip
destination-pattern 119....
session target ipv4:172.16.65.182
!Configure the E&M interface
voice-port 1/0/0
signal immediate
operation 4-wire
type 2
172.16.65.182
172.16.1.123
IP cloud
Router SLC
Voice port
Configuring Voice over IP for the Cisco 3600 Series VC-43
Linking PBX Users with E&M Trunk Lines
Dial peer
Voice port
1 POTS
1/0/0
PBX
Dial peer
1/0/1
2 POTS
Salt Lake City
(801)