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subscribe. The default is 600 sec. If a new voice mail is arrived, the
stutter tone will be used instead of regular dial tone. This feature is
dedicated to
FXS only.
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 will 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.
Encrypt:
Disable: disable encryption function.
Welltech encryption: Enable Welltech proprietary encryption for
SIP signaling and RTP. It is required a Welltech SIP proxy server
(WS6500 or SIPPBX 6200) to work with this feature. When enable
it, you can hide your VOIP traffic from ISP's monitor.
External encryption: for custom encryption, it is valid now, if you
want add the function to mach your proxy, please contact with
Welltech's sales.
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