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Configuring the Voice Settings
PSTN (LINE Port)
Cisco SPA232D Administration Guide 135
4
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 G726 codec at 32 kbps, select
yes. Otherwise, select no.
Default setting: no
Echo Canc Enable To enable the use of the echo canceller, select yes.
Otherwise, select no.
Default setting: yes
FAX V21 Detect
Enable
To enable detection of V21 fax tones, select yes.
Otherwise, select no.
Default setting: no
Echo Canc Adapt
Enable
To enable the echo canceller to adapt, select yes.
Otherwise, select no.
Default setting: yes
FAX CNG Detect
Enable
To enable detection of the fax Calling Tone (CNG), select
yes. Otherwise, select no.
Default setting: no
Echo Supp Enable To enable the use of the echo suppressor, select yes.
Otherwise, select no.
Default setting: no
FAX Passthru
Codec
Select the codec for fax passthrough, G711u or G711a.
Default setting: G711u
DTMF Process
INFO
To use the DTMF process info feature, select yes.
Otherwise, select no.
Default setting: yes
FAX Codec
Symmetric
To force the ATA device to use a symmetric codec during
fax passthrough, select yes. Otherwise, select no.
Default setting: yes
DTMF Process
AV T
To use the DTMF process AVT feature, select yes.
Otherwise, select no. When set to no, the AVT (RFC2833)
payload type is not be included in outbound SDP.
Default setting: yes
Field Description