Welltech WG2504 FXS V.4.02 - Manual (Page 40)

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wait indefinitely for the final response.
 First Response Timer (msec): When sending a request out, the
User Agent waits this timer for any response received from UAS. If
timer is expired and no any SIP message is received, the User Agent
will think the request is failed. The default is 5 seconds.
 MWI Subscript Expires (sec): You can Enable or Disable the MWI
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
dedicate 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 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.
 Signal=16: send signal 16 on info message.
 Signal=hf: send signal hf on info message.
 Disable: disable this function.
 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.
 VGCP APP: supports VGCP APP type.
 VGCP APP (XOR): supports VGCP APP XOR type.