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<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>Dears<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>Asterisk is a
median server between the caller and the terminations gateway<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>The caller
send the call to asterisk </span></b><b><span style='font-size:9.0pt;
font-family:Wingdings;color:#595959'>à</span></b><b><span style='font-size:
9.0pt;color:#595959'> asterisk will play music on hold untill the termination
gateway send 200 OK and the RTP establish<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>My problem that,
Asterisk is not forwarding the 180 ringing from the termination gateway to the
user <o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>How can I forward
the sip message 180 to the caller or let the music on hold stop playing and the
caller hears the Ring Back Tone which when 180 ringing from the termination
gateway.<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>What I am
using now to stop the musinc on hold when the RTP established is <o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>exten => _X.,n,Dial(SIP/Temination_Gateway/${EXTEN}|300|m)<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>NB: I tried
to edit chan_sip.c but I did not find the solution <o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>Please Advice<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'>Regards<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></b></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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