User guide

37
will think the request is failed. The default is 5 seconds.
 Line Congestion Code: when callee's end system was contacted
successfully but the callee is busy and does not wish to take the call
at this time, the system wills response the code, default is 600.
(FXO use)
 SIP-Info Flash Mode: when you enable the feature, system will
make flash key to send SIP message by sip-info.
5-2 Audio
The setting page includes the device related audio settings.
Figure 5-2 Audio setting
 RFC 2833 Payload Type: 96 or 101. It is recommended to use 101.
 DTMF Send On Time(msec): When generate DTMF, the DTMF on
time will be send (default value is 70 ms)
 DTMF Send Off Time(msec): When generate DTMF, the DTMF off
time will be send (default value is 70 ms)
 DTMF Detect Min on Time (msec): The minimum DTMF on time will
be processed as a regular DTMF event. Smaller than it will be ignored.
The default value is 60ms.
 DTMF Detect Min off Time (msec): The minimum DTMF off time for
the same DTMF value. Smaller than it and the new DTMF digit is the
same as previous one will be handled as 1 digit only.
 DTMF Relay Volume: The DTMF relay volume
 T.38 Fax Volume: The T.38 fax relay volume
 T.38 Redundant Depth: The T.38 redundant packet depth. It could 0
(no redundant), 1 or 2. It is recommended to set to 2.
 T.38 ECM: The t.38 error correction mode. Default value is ON.