Specifications

6-35
Catalyst 4224 Access Gateway Switch Software Configuration Guide
OL-2031-02
Chapter 6 Configuring VoIP
Additional VoIP Dial-Peer Configurations
To generate Simple Network Management Protocol (SNMP), use the following
commands beginning in global configuration mode:
Note RSVP reservations are only one-way. If you configure RSVP, the VoIP dial peers
on either side of the connection must be configured for RSVP.
Configure codec and VAD for Dial Peers
Coder-decoder (codec) typically is used to transform analog signals into a digital
bit stream and digital signals back into analog signals. The codec specifies the
voice coder rate of speech for a dial peer. Voice activity detection (VAD) is used
to disable the transmission of silence packets. codec and VAD values for a dial
peer determine how much bandwidth the voice session uses.
Configure codec for a VoIP Dial Peer
To specify a voice coder rate for a selected VoIP dial peer, use the following
commands, beginning in global configuration mode:
Table 6-8 Configuration Commands to Generate SNMP
Task Command
Step 1
Enter the dial peer configuration mode to configure a
VoIP dial peer.
dial-peer voice number voip
Step 2
Generate an SNMP event if the QoS for a dial peer drops
below a specified level.
acc-qos [best-effort |
controlled-load |
guaranteed-delay]
Table 6-9 Configuration Commands to Specify a Voice Coder Rate
Task Command
Step 1
Enter the dial peer configuration mode to
configure a VoIP dial peer.
dial-peer voice number voip
Step 2
Specify the desired voice coder rate of speech.
codec [g711alaw | g711ulaw |
g729r8 | g729r8 pre-ietf ]