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Cisco IOS Release 12.0(7)T
Configuring VoIP Peers
VoIP peers enable outgoing calls to be made from a particular telephony device. To configure a VoIP
peer, you need to uniquely identify the peer (by assigning it a unique tag number), define its
destination telephone number and destination IP address. As with POTS peers, under most
circumstances, the default values for the remaining dial peer configuration commands will be
adequate to establish connections.
To configure a VoIP peer, use the following commands beginning in global configuration mode:
For additional VoIP dial peer configuration options, refer to the “Voice-Related Commands” section
of the Cisco IOS Release 12.0 Voice, Video, and Home Applications Command Reference, the Cisco
IOS Release 12.0(3)T Voice over IP for the Cisco AS5300 feature module, and the Cisco IOS Release
12.0(3)T Service Provider Features for Voice over IP feature module.
Verifying Dial Peer Configuration
•
If you have relatively few dial peers configured, you can use the show dial-peer voice command
to verify that the data configured is correct. Use this command to display a specific dial peer or
to display all configured dial peers.
• Use the show dialplan number command to show the dial peer to which a particular number
(destination pattern) resolves.
Troubleshooting Tips
• Ping the associated IP address to confirm connectivity. If you cannot successfully ping your
destination, refer to the chapter, “Configuring IP,” in the Cisco IOS 11.3 Network Protocols
Configuration Guide, Part 1.
• Use the show dial-peer voice command to verify that the operational status of the dial peer is up.
Step Command Purpose
1
Router(config)# dial-peer voice
number pots
Enter the dial peer configuration mode to configure a
POTS peer.
2
Router(config-dial-peer)# incoming called-number
number
Specify direct inward dial for this POTS peer.
Step Command Purpose
1
Router(config)# dial-peer voice number voip
Enters the dial peer configuration mode to configure a
VoIP peer. The number value of the dial-peer voice voip
command is a tag that uniquely identifies the dial peer.
2
Router(config-dial-peer)# destination-pattern string
Defines the destination telephone number associated with
this VoIP dial peer.
3
Router(config-dial-peer)# tech-prefix number
Specifies that a particular technology prefix be prepended
to the destination patter of this dial peer.
4
Router(config-dial-peer)# session-target
{ipv4:destination-address | dns:[$s$.|$d$.|$e$.|$u$.]
host-name|loopback:rtp|loopback:compressed|
loopback:unompressed|ras}
Specifies a destination IP address for this dial peer.