Cisco 521SG - Unified IP Phone VoIP Administration Manual page 135

Configuring Security, Quality, and Network Features
Configuring Voice Codecs
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
G729a Enable
G722 Enable
G723 Enable
G726-16 Enable
G726-24 Enable
G726-32 Enable
G726-40 Enable
Release Unused
Codec
DTMF Process
AVT
Description
To enable the use of the G.729a codec at 8 kbps, select
yes. Otherwise, select no. Defaults to yes.
Enables use of the G.722 codec. Defaults to yes.
Not applicable to the Cisco WIP310.
To enable the use of the G.723a codec at 6.3 kbps, select
yes. Otherwise, select no. Defaults to yes.
Not applicable to the Cisco WIP310, Cisco SPA300
Series, Cisco SPA525G or Cisco SPA525G2.
To enable the use of the G.726 codec at 16 kbps, select
yes. Otherwise, select no. Defaults to yes.
Not applicable to the Cisco WIP310, Cisco SPA525G or
Cisco SPA525G2.
To enable the use of the G.726 codec at 24 kbps, select
yes. Otherwise, select no. Defaults to yes.
Not applicable to the Cisco WIP310, Cisco SPA525G or
Cisco SPA525G2.
To enable the use of the G.726 codec at 32 kbps, select
yes. Otherwise, select no. Defaults to yes.
To enable the use of the G.726 codec at 40 kbps, select
yes. Otherwise, select no. Defaults to yes.
Not applicable to the Cisco WIP310, Cisco SPA525G or
Cisco SPA525G2.
To enable the release of codecs not used after codec
negotiation on the first call so that other codecs can be
used for the second line, select yes. Otherwise, select no.
Defaults to yes.
Processes RTP DTMF events. When yes DTMF is relayed
by using Named Telephony Events (NTEs) in Real-Time
Transport Protocol (RTP) packets (RFC-2833, RTP Payload
for DTMF Digits, Telephony Tones and Telephony Signals).
Defaults to yes.
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