Cisco SPA112 Administration Manual page 105

Configuring Voice
Configuring Voice Settings
Cisco SPA100 Series Phone Adapters Administration Guide
Field
Third Preferred Codec
Use Pref Codec Only
G729a Enable
Silence Supp Enable
G726-32 Enable
Silence Threshold
FAX V21 Detect Enable
Echo Canc Enable
FAX CNG Detect
Enable
Echo Canc Adapt
Enable
FAX Passthru Codec
Echo Supp Enable
FAX Codec Symmetric
Description
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
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
To enable the use of the G.729a codec at 8 kbps,
select yes. Otherwise, select no. Default setting: Yes
To enable silence suppression so that silent audio
frames are not transmitted, select yes. Otherwise,
select no. Default setting: no
To enable the use of the G.726 codec at 32 kbps,
select yes. Otherwise, select no. Default setting: Yes
Select the appropriate setting for the threshold: high,
medium, or low. Default setting: medium
To enable detection of V21 fax tones, select yes.
Otherwise, select no. Default setting: Yes
To enable the use of the echo canceller, select yes.
Otherwise, select no. Default setting: Yes
To enable detection of the fax Calling Tone (CNG),
select yes. Otherwise, select no. Default setting: Yes
To enable the echo canceller to adapt, select yes.
Otherwise, select no. Default setting: Yes
Select the codec for fax passthrough, G711u or
G711a. Default setting: G711u
To enable the use of the echo suppressor, select yes.
Otherwise, select no. Default setting: Yes
To force the ATA to use a symmetric codec during fax
passthrough, select yes. Otherwise, select no. Default
setting: Yes
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