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<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>Hello
all,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=864235314-21092007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>I have come accross
some issue while using nathelper and rtpproxy. The senario is as
follows:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>An INVITE is sent to
a NATed client and rtpproxy is used. force_rtp_proxy() rewrites the SDP to
something like</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>c=IN IP4
213.5.43.4.<BR>m=audio 35034 RTP/AVP 18 100 101.<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>The client replies
486 Busy and the script sends the request to an Asterisk which is used for
voicemail. If force_rtp_proxy() is called a second time before sending to
Asterisk then the result is a SDP with the following.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>c=IN IP4
213.5.43.4213.5.43.4.<BR>m=audio 3503435034 RTP/AVP 18 100
101.<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>Obviously this can
be avoided if I add the proper logic in the script to avoid the second call to
force_rtp_proxy(). However this behaviour looks like a bug. </DIV></SPAN></FONT>
<DIV><FONT face=Arial size=2><SPAN
class=864235314-21092007> </DIV></SPAN></FONT>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>As a second
question, when the call goes to Asterisk, there is no need for rtpproxy. So how
can someone revert the SDP to its original form? How do you usually handle this
case? </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=864235314-21092007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=864235314-21092007>thank you in
advance</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=864235314-21092007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=864235314-21092007>George</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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