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Checking Dial Peer Configuration

If you configured POTS dial peers on your router by following these examples, you can place calls

between telephones connected to the same router. You can also use the show dial-peer voice command

to verify that the data you configured is correct.

If the voice port is offline, use the interface configuration no shutdown command to enable it.

Note

Calling Between Routers

To enable the West and East offices to send voice traffic to each other over the same IP network they use

for data traffic, use a WIC on each router to provide a connection to the IP network, as shown in

Figure

Figure 15

408 555-3737

408 555-4141

Look at the connection between the West router and the IP network. This connection does not include a

voice port or an attached telephone—it leads from a WAN interface to a remote destination somewhere

on the IP network. IP routers know how to locate IP addresses on the network, but they do not know how

to locate telephone numbers. To route an outgoing voice call over this connection, the West router has to

associate a telephone number in the East office with the IP address of the East router.

Table 9

This type of dial peer is called a remote dial peer or VoIP dial peer. (Remember, the dial-peer tags are

arbitrary.) The term VoIP means that the dial peer associates a telephone number with an IP address.

Table 9

Remote Location

East

Create a VoIP dial peer on the West router for every telephone on the East router, all associated with the

same IP address. But it is much easier to use periods as wildcards, as shown in

78-11259-05

15.

IP Connection Between Routers

FXS VIC

0/0

192.168.19.27

West

FXS VIC

0/1

assigns a dial-peer tag to each telephone number and its associated IP address on the West router.

West Router Remote Dial Peers

Telephone Number

919 555-8282

919 555-9595

FXS VIC

1/0

IP cloud

East

FXS VIC

1/1

Destination Pattern

19195558282

19195559595

Cisco 1751 Voice-over-IP Quick Start Guide

Configuring Voice-over-IP

919 555-8282

192.168.11.3

919 555-9595

IP Address

Dial-Peer Tag

192.168.11.3

501

192.168.11.3

502

Table

10.