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IPPBX IP02 User Manual
If a number in blacklist dial into IPPBX, caller will hear following prompt: "Then number you have dialed is not in
service. Please check the number and try again." Then system will then disconnect the call.
7.10 SIP Settings
1) General
UDP Port
Set the SIP port (UDP) which IPPBX is listening to.
Enable TCP
Enable TCP protocol for SIP.
TCP Port
Set the SIP port (TCP) which IPPBX is listening to.
Registration / Subscription Time Max
Maximum duration in seconds of a SIP registration / subscription.
Registration / Subscription Time Min
Minimum duration in seconds of a SIP registration / subscription.
RTP Port Min / Max
Set the RTP port range.
DTMF Mode
Set the default DTMF mode
2) NAT
Here provide other two solutions for SIP one-way-audio issue besides outbound proxy. Using any one is OK.
a. STUN
Just setting STUN server / port is OK.
There are many public STUN server on Internet: http://www.voip-info.org/wiki/view/STUN
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ATCOM TECHNOLOGY CO., LIMITED
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