Cisco 3725 Software Configuration Guide - Page 132

Linking PBX Users with E&M Trunk Lines

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Chapter 4 Configuring Voice-over-IP destination-pattern +4155264000 port 1/0/0 ! Create voip dial-peer 20 dial-peer voice 20 voip !Define its associated telephone number and IP address destination-pattern +4085264000 sess-target ipv4:10.0.0.1 ! Configure serial interface 0/0 interface Serial0/0 ip address 40.0.0.1 255.0.0.0 no ip mroute-cache ! Configure RTP header compression ip rtp header-compression ip rtp compression-connections 25 ! Enable RSVP on this interface ip rsvp bandwidth 96 96 fair-queue 64 256 3 clockrate 64000 ! Configure IGRP router igrp 888 network 10.0.0.0 network 20.0.0.0 network 40.0.0.0 Linking PBX Users with E&M Trunk Lines The following example shows how to configure VoIP 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 4-2 illustrates the topology of this connection example. Figure 4-2 Linking PBX Users with E&M Trunk Lines Example Note This example assumes that the company already has established a working IP connection between its two remote offices. Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers 4-6 OL-1957-04

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4-6
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-04
Chapter 4
Configuring Voice-over-IP
destination-pattern +4155264000
port 1/0/0
! Create voip dial-peer 20
dial-peer voice 20 voip
!Define its associated telephone number and IP address
destination-pattern +4085264000
sess-target ipv4:10.0.0.1
! Configure serial interface 0/0
interface Serial0/0
ip address 40.0.0.1 255.0.0.0
no ip mroute-cache
! Configure RTP header compression
ip rtp header-compression
ip rtp compression-connections 25
! Enable RSVP on this interface
ip rsvp bandwidth 96 96
fair-queue 64 256 3
clockrate 64000
! Configure IGRP
router igrp 888
network 10.0.0.0
network 20.0.0.0
network 40.0.0.0
Linking PBX Users with E&M Trunk Lines
The following example shows how to configure VoIP 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 4-2
illustrates the topology of this connection example.
Figure 4-2
Linking PBX Users with E&M Trunk Lines Example
Note
This example assumes that the company already has established a working IP connection between its
two remote offices.