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Configuring Voice Ports and Voice Dial Peers
Configuring Voice Ports and Voice Dial Peers
In this section, the voice ports and voice dial peers are set up to support the local and the remote
parties.
Step
Command
1
Router# configure terminal
2
Router(config)# voice-port port/slot
3
Router(config-voiceport) codec g726r32
or see Step 6.
4
Router(config-voiceport) exit
5
Router(config)# dial-peer voice tag voatm
6
Router(config-dialpeer)# fax rate 4800
12
Cisco IOS Release 12.0(7)T
Purpose
Enter global configuration mode.
Specify a voice port and enter voice-port configuration
mode.
port specifies the slot number on the Cisco MC3810. If
the analog voice module (AVM) or the digital voice
module (DVM) is installed, the slot number is 1. If the
multiflex trunk (MFT) is installed, the slot number is 0.
slot specifies the voice port number. The valid entries
depend on the hardware configuration, as follows:
• Analog: 1 to 6
• Digital T1: 1 to 24
• Digital E1: 1 to 15 and 17 to 31
(Fax only, Optional) If you are configuring a dial peer for
faxes over ATM SVCs, the default codec setting for the
voice port does not function properly with the typical fax
rate of 9.600 bps. Therefore, you can either change the
codec or change the fax rate. The codec must support a
minimum of 22 kbps.
To change the codec from the default g729ar8 codec
(8 kbps), enter the voice-port codec command to specify
one of the following compression modes:
• g726r32—Specifies G.726 32K ADCPM compression.
• g711alaw—Specifies G.711 64K PCM A-Law
compression.
• g711ulaw—Specifies G.711 64K PCM U-Law
compression.
Exit voice-port configuration mode.
Define a voice ATM dial peer for the remote system and
enter dial-peer configuration mode. Voice dial peers are
persistent and exist until they are specifically removed
with the no form of the dial-peer voice command.
The tag value identifies the dial peer and must be unique
on the Cisco MC3810. Do not duplicate a specific tag
number. Valid values are from 1 to 10000.
(Fax only, Optional) If you are configuring a dial peer for
faxes over ATM SVCs, the default codec setting for the
voice port does not function properly unless the fax rate is
slowed from the typical speed of 9.600 bps. Therefore,
you can either change the codec (see Step 3) or change the
fax rate to 4,800 bps or 2,400 bps.
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