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Chapter 6: Using the Web-based Utility
The Voice Tab
IP Telephony System
G726-24 Enable. To enable the use of the G726 codec at 24kbps, select yes. Otherwise, select no. The default
is yes.
FAX CED Detect Enable. To enable detection of the fax Caller-Entered Digits (CED) tone, select yes. Otherwise,
select no. The default is yes.
G726-32 Enable. To enable the use of the G726 codec at 32kbps, select yes. Otherwise, select no. The default
is yes.
FAX CNG Detect Enable. To enable detection of the fax Calling Tone (CNG), select yes. Otherwise, select no. The
default is yes.
G726-40 Enable. To enable the use of the G726 codec at 40kbps, select yes. Otherwise, select no. The default
is yes.
FAX Passthru Codec. Select the codec for fax passthrough, G711u or G711a. The default is G711u.
DTMF Process INFO. To use the DTMF process info feature, select yes. Otherwise, select no. The default is yes.
FAX Codec Symmetric. To force the System to use a symmetric codec during fax passthrough, select yes.
Otherwise, select no. The default is yes.
DTMF Process AVT. To use the DTMF process AVT feature, select yes. Otherwise, select no. The default is yes.
FAX Passthru Method. Select the fax passthrough method: None, NSE, or ReINVITE. The default is NSE.
DTMF Tx Method. Select the method to transmit DTMF signals to the far end: InBand, AVT, INFO, Auto,
InBand+INFO, or AVT+INFO
. InBand sends DTMF using the audio path. AVT sends DTMF as AVT events. INFO
uses the SIP INFO method. Auto uses InBand or AVT based on the outcome of codec negotiation.The default is
Auto.
FAX Process NSE. To use the fax process NSE feature, select yes. Otherwise, select no. The default is yes.
Hook Flash Tx Method. Select the method for signaling hook flash events: None, AVT, or INFO. None does not
signal hook flash events. AVT uses RFC2833 AVT (event = 16). INFO uses SIP INFO with the single line signal=hf in
the message body. The MIME type for this message body is taken from the Hook Flash MIME Type setting. The
default is None.
FAX Disable ECAN. If enabled, this feature will automatically disable the echo canceller when a fax tone is
detected. To use this feature, select yes. Otherwise, select no. The default is no.
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