Description
Parameter
Enables use of the G.711u codec.
Default: Yes
G711u Enable
Enables use of the G.711a codec.
Default: Yes
G711a Enable
To enable use of the G.729a codec at 8 kbps, select
Yes
. Otherwise, select
No
.
Default: Yes
G729a Enable
Enables use of the G.722 codec.
Default: Yes
G722 Enable
Enables use of the G.722.2 codec.
Default: No
G722.2 Enable
Enables use of the iLBC codec.
Default: Yes
iLBC Enable
Enables the use of OPUS codec.
Default: Yes
OPUS Enable
To enable silence suppression so that silent audio
frames are not transmitted, select
Yes
. Otherwise,
select
No
.
Default: No
Silence Supp Enable
The method for transmitting DTMF signals to the far
end. The options are:
• AVT—Audio video transport. Sends DTMF as
AVT events.
• InBand—Sends DTMF by using the audio path.
• Auto—Uses InBand or AVT based on the
outcome of codec negotiation.
• INFO—Uses the SIP INFO method.
DTMF Tx Method
When set to Default, the Cisco IP phone responds to
an Invite with a 200 OK response advertising the
preferred codec only. When set to List All, the Cisco
IP phone responds listing all the codecs that the phone
supports. The default value is Default, or to respond
with the preferred codec only.
Codec Negotiation
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
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Phone Troubleshooting
Audio Configuration
