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Configuring the Voice Settings
Line1 Settings (PHONE Port)
Cisco SPA232D Administration Guide 113
4
Audio Configuration
Field Description
Preferred Codec,
Second Preferred
Codec, Third
Preferred Codec
Up to three codecs to be used for all calls from this
handset, listed order of preference. The actual codec
used in a call still depends on the outcome of the codec
negotiation protocol. Select one of the following: G711u,
G711a, G726-32, G729a, or G722.
Default setting for Preferred Codec: G711u
Default setting for Second and Third Preferred Codec:
Unspecified
Use Pref Codec
Only
To use only the preferred codec for all calls, select yes.
(The call fails if the far end does not support this codec.)
Otherwise, select no.
Default setting: yes
Use Remote Pref
Codec
To use the preferred codec specified by the remote peer,
select yes. Otherwise, select no.
Default setting:
Codec Negotiation Specify the codecs for codec negotiation: Default or List
All.
Default setting: Default
G729a Enable To enable the use of the G.729a codec at 8 kbps, select
yes. Otherwise, select no.
Default setting: yes
Silence Supp
Enable
To enable silence suppression so that silent audio frames
are not transmitted, select yes. Otherwise, select no.
Default setting: no
G726-32 Enable To enable the use of the G.726 codec at 32 kbps, select
yes. Otherwise, select no.
Default setting: yes
Silence Threshold Select the appropriate setting for the threshold: high,
medium, or low.
Default setting: medium
FAX V21 Detect
Enable
To enable detection of V21 fax tones, select yes.
Otherwise, select no.
Default setting: yes