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<span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; ">Hi Guys,<br><br>Something I have noticed while dealing with T.38 and re-invites in Asterisk 1.4.22.<br><br>I have a provider who re-invites with the following sdp (message flow<br>PROVIDER_EQPMT -> ASTERISK):<br><br>"""<br>.<br>v=0.<br>o=SIP_5F9 123456 654322 IN IP4 CONN_IP_PROVIDER.<br>s=-.<br>c=IN IP4 CONN_IP_PROVIDER.<br>t=0 0.<br>m=audio 0 RTP/AVP 0.<br>m=image 26858 udptl t38.<br>a=T38FaxMaxBuffer:288.<br>a=T38FaxRateManagement:transferredTCF.<br>a=T38FaxUdpEC:t38UDPRedundancy.<br>"""<br><br>The answer coming from asterisk in this case is:<br><br>"""<br>.<br>v=0.<br>o=root 3484 3485 IN IP4 CONN_IP_ASTERISK.<br>s=session.<br>c=IN IP4 CONN_IP_ASTERISK.<br>t=0 0.<br>m=image 4653 udptl t38.<br>a=T38FaxVersion:0.<br>a=T38MaxBitRate:9600.<br>a=T38FaxRateManagement:transferredTCF.<br>a=T38FaxMaxBuffer:200.<br>a=T38FaxMaxDatagram:200.<br>a=T38FaxUdpEC:t38UDPRedundancy.<br>"""<br><br>I see a problem here since the number of matched media streams from the<br>offer does not match with the number of matched media streams in reply<br>from asterisk (notice the m=audio 0 RTP/AVP 0 not present in the reply).<br><br>Please let me know if there are workarounds on this issue, or if this<br>could be a bug on asterisk side.</span><div><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;"><br></span></div><div><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;">Best regards,</span></div><div><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;"><br></span></div><div><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;">Mario Staphorst</span></div><br /><hr />Express yourself instantly with MSN Messenger! <a href='http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/' target='_new'>MSN Messenger</a></body>
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