Configuring Voice
Configuring Voice Settings
Cisco SPA100 Series Phone Adapters Administration Guide 105
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Third Preferred Codec Third preferred codec for all calls. (The actual codec
used in a call still depends on the outcome of the
codec negotiation protocol.) Select one of the
following: Unspecified, G711u, G711a, G726-16,
G726-24, G726-32, G726-40, G729a, or G723. Default
setting: 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: no
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
Echo Canc Enable To enable the use of the echo canceller, select yes.
Otherwise, select no. Default setting: Yes
FA X CNG Detect
Enable
To enable detection of the fax Calling Tone (CNG),
select yes. Otherwise, select no. Default setting: Yes
Echo Canc Adapt
Enable
To enable the echo canceller to adapt, select yes.
Otherwise, select no. Default setting: Yes
FAX Passthru Codec Select the codec for fax passthrough, G711u or
G711a. Default setting: G711u
Echo Supp Enable To enable the use of the echo suppressor, select yes.
Otherwise, select no. Default setting: Yes
FAX Codec Symmetric To force the ATA to use a symmetric codec during fax
passthrough, select yes. Otherwise, select no. Default
setting: Yes
Field Description
