SPA9000 Field Reference
Voice tab
SPA9000 Voice System Administration Guide
250
B
DTMF Detection Mode
Determines where to use Normal or Strict DTMF detection
Strict mode reduces the likelihood of false DTMF detection
but requires an extra hold time after detection. Also the DTMF
level is raised. Under strict mode, the minimum duration
threshold is 60 and 90 ms for AVT and SIP-INFO respectively.
The level threshold is -20 dBm.
Default:
Strict
FAX Process NSE
To use the fax process NSE feature, select yes. Otherwise,
select no.
Default:
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.
Default:
None
FAX Disable ECAN
If enabled, this feature automatically disables the echo
canceller when a fax tone is detected. To use this feature,
select yes. Otherwise, select no.
Default:
no
Release Unused Codec
This feature allows the release of codecs not used after
codec negotiation on the first call, so that other codecs can
be used for the second line. To use this feature, select yes.
Otherwise, select no.
Default:
yes
FAX Enable T38
To enable the use of the ITU-T T.38 standard for faxing, select
yes. Otherwise, select no.
Default:
yes
FAX Tone Detect Mode
This parameter has three possible values:
caller or callee - SPA will detect FAX tone whether it is callee
or caller
caller only - SPA will detect FAX tone only if it is the caller
callee only - SPA will detect FAX tone only if it is the callee
Default:
caller or callee
FAX T38 Redundancy
The redundancy factor for the T.38 Fax Relay from 0 (none) to
4
Default:
1
