Cisco Systems 3600 manual Linking PBX Users with E&M Trunk Lines, Configuration for Router SJ

Linking PBX Users with E&M Trunk Lines

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 Linking PBX Users with E&M Trunk Lines Example

172.16.1.123 172.16.65.182

Note This example assumes that the company already has established a working IP connection between its two remote offices.

Configuration for Router SJ

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

Configuring Voice over IP for the Cisco 3600 Series VC-43