Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
To complete the end-to-end call between dial peer 1 and dial peer 4 as illustrated in Figure 6, enter the
following commands on router 10.1.1.2:
Router(config)# dial-peer voice 4 pots
Router(config-dial-peer)# destination-pattern 13105551000
Router(config-dial-peer)# port 0/0
Router(config)# dial-peer voice 3 voip
Router(config-dial-peer)# destination-pattern 14085554000
Router(config-dial-peer)# session target ipv4:10.1.2.2
Create a Dial-Peer Configuration Table
There is specific data relative to each dial peer that needs to be identified before you can configure dial
peers in VoIP. One way to do this is to create a dial peer configuration table.
Using the example in Figure 2, Router 1, with an IP address of 10.1.1.1, connects a small sales branch
office to the main office through Router 2. There are three telephones in the sales branch office that need
to be established as dial peers. Router 2, with an IP address of 10.1.1.2, is the primary gateway to the
main office. There are four devices that need to be established as dial peers in the main office, all of
which are basic telephones connected to the PBX. Figure 2 on page 2-8 shows a diagram of this small
voice network, and Table 1 shows the dial peer configuration table for the example in the figure.
Configure POTS Dial Peers
POTS dial peers enable incoming calls to be received by a particular telephony device. To configure a
POTS dial peer, you need to uniquely identify the dial peer (by assigning it a unique tag number), define
its telephone numbers, and associate it with a voice port through which calls are established. Under
most circumstances, the default values for the remaining dial peer configuration commands are
sufficient to establish connections.
To enter the dial peer configuration mode (and select POTS as the method of voice-related
encapsulation), use the following global configuration command:
Router(config)# dial-peer voice number pots
The number value of the dial-peer voice pots command is a tag that uniquely identifies the dial peer.
(This number has local significance only.)
To configure the identified POTS dial peer, use the following dial peer configuration command:
Router(config-dial-peer)# destination-pattern string
The string value of the destination-pattern command is the destination telephone number associated
with this POTS dial peer.
Table 2 Dial-Peer Configuration Table for Sample VoIP Network
Commands
Router Dial Peer Tag
Destination-
Pattern Type Session Target CODEC QoS
Cisco 1751
Router 1
10 1729555.... VoIP IPV4 10.1.1.2 G.729 Best effort
Cisco 1751
Router 2
11 1408555.... VoIP IPV4 10.1.1.1 G.729 Best effort