Cisco VGD-1T3, Руководство по настройке программного обеспечения

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Configuring Voice over IP
Configuring Basic VoIP
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Cisco VGD 1T3 Voice Gateway Software Configuration Guide
In this west-to-east scenario, dial peers 2 and 4 are used, in that order. If Newark extension 6000 were
to call San Jose extension 5000, dial peers 3 and 1 would be used, in that order.
Configuring Basic VoIP
Configuring basic VoIP involves the following:
• Performing Preconfiguration Tasks
•
Configuring Signaling on Voice Ports
• Configuring Dial Peers
•
Configuring Echo Cancellation on the Voice Feature Card
Performing Preconfiguration Tasks
Before you configure your gateway for VoIP, complete the following tasks. See the earlier chapters in
this book and the references at the end of this chapter for the additional information you need to do so.
Step 1 Establish a working IP network in which delay (as measured by ping tests) and jitter are minimized.
Step 2
Install a universal port or voice feature card into the appropriate slot of your gateway. The number of
ports or channels available for sending VoIP data depends on the capacity of the card. For more
information, see the chapter
“Managing and Troubleshooting the Voice Feature Card.”
Step 3 Complete basic gateway configuration. For more information, see the chapter “Basic Configuration
Using the Command-Line Interface.”
Step 4
Formulate the beginning of a dial plan that includes the following:
• Logical network diagram showing voice ports and components to which they connect, including
phones, fax machines, PBX or key systems, other voice devices that require connection, and
voice-enabled routers
•
Connection details, including physical interfaces (T1, analog, and so forth), relevant LAN and WAN
ports, and all voice ports; for each WAN, type (Frame Relay, PPP, and so forth); for Frame Relay,
relevant PVCs and link-access rates
• Phone numbers or extensions for each voice port, logically laid out and consistent with existing
private dial plans and external dialing schemes
Step 5
Establish a working telephony network based on that dial plan.
Step 6 Integrate the dial plan and telephony network into your existing IP network topology. The following is
recommended:
•
Make routing or dialing transparent to users by, for example, avoiding such inconveniences as
secondary dial tones.
• Contact your PBX vendor to learn how to reconfigure PBX interfaces.