Specifications

i
Cisco 1751 Router Software Configuration Guide
OL-1070-01
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VoIP Configuration
This chapter explains how to configure VoIP on your router and contains the following sections:
• Prerequisite Tasks
• Configuration Tasks
• Configure IP Networks for Real-Time Voice Traffic
• Configure Number Expansion
• Configure Dial Peers
• Configure Voice Ports
• Additional VoIP Dial Peer Configurations
• Configure Frame Relay for VoIP
• Configure Microsoft NetMeeting for VoIP
Prerequisite Tasks
Before you can configure your router to use VoIP, you need to perform the following tasks:
• Establish a working IP network. For more information about configuring IP, refer to the
“IP Overview,” “Configuring IP Addressing,” and “Configuring IP Services” chapters in the
Network Protocols Configuration Guide, Part 1 for Cisco IOS Release 12.1T.
• Install the voice interface cards (VICs) in your router. For more information about installing a VIC
in your router, refer to the Cisco WAN Interface Cards Hardware Installation Guide.
• Complete your company’s dial plan.
• Establish a working telephony network based on your company’s dial plan.
• Integrate your dial plan and telephony network into your existing IP network topology. Merging
your IP and telephony networks depends on your particular IP and telephony network topology. In
general, we recommend the following:
– Use canonical numbers wherever possible. Avoid situations where numbering systems are
significantly different on different routers or access servers in your network.