Hi Kelvin, thank you for your response, well in fact it is not working but that's only a NOTICE, not an error. Warnings comes after that and the fax is not sent. Take a look at the last lines of this output : <br><br><br>
<< [ TYPE: Control (4) SUBCLASS: Ringing (3) ] [SIP/GWCISCO5400O-01ba5638]<br>IVR3*CLI> debug channel <br>all SIP/GWCISCO5400O-01ba5638 SIP/T38modem-01ba2178 <br><< [ TYPE: Control (4) SUBCLASS: Answer (4) ] [SIP/GWCISCO5400O-01ba5638]<br>
<< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br><< [ TYPE: Control (4) SUBCLASS: T38/Negotiation Requested (19) ] [SIP/GWCISCO5400O-01ba5638]<br><< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br>
[Jul 16 18:20:20] NOTICE[2846]: rtp.c:1739 ast_rtp_read: Unknown RTP codec 96 received from '192.168.3.163'<br><< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br>[Jul 16 18:20:21] NOTICE[2846]: rtp.c:1739 ast_rtp_read: Unknown RTP codec 96 received from '192.168.3.163'<br>
<< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br>[Jul 16 18:20:21] NOTICE[2846]: rtp.c:1739 ast_rtp_read: Unknown RTP codec 96 received from '192.168.3.163'<br><< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br>
<< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br><< [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-01ba5638]<br>[Jul 16 18:20:30] WARNING[2815]: chan_sip.c:3075 retrans_pkt: Maximum retries exceeded on transmission 1af1c92e-9270-de11-8264-001517bb9e3e@IVR3 for seqno 1 (Critical Response) -- See doc/sip-retransmit.txt.<br>
[Jul 16 18:20:30] WARNING[2815]: chan_sip.c:3102 retrans_pkt: Hanging up call 1af1c92e-9270-de11-8264-001517bb9e3e@IVR3 - no reply to our critical packet (see doc/sip-retransmit.txt).<br><br>Do you have an idea of what is happening ? I sniffed UDP traffic on port 5060 and I get : <br>
INVITE SDP ( t38 ) ----------------------><br>TRYING <----------------------------------<br>NOT ACCEPTABLE HERE<------------<br>ACK------------------------------------------------><br>BYE<-----------------------------------------------<br>
200 OK--------------------------------------------><br><br>Thanks for your help.<br><br><br><br><div class="gmail_quote">On Thu, Jul 16, 2009 at 6:17 PM, Kevin P. Fleming <span dir="ltr"><<a href="mailto:kpfleming@digium.com">kpfleming@digium.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">Xavier Cardil wrote:<br>
> Hi, I've managed to get HYLAFAX---->T38MODEM-----><br>
> ASTERISK---->CISCOAS5400 working, but when they are negotiating asterisk<br>
> drops a message telling "Unknown RTP codec 96 received from gateway" Do<br>
> somebody know how to fix it ?<br>
<br>
</div>There's nothing to fix; the gateway sent an expected RTP packet, which<br>
Asterisk dropped. If your FAX works, then you can ignore this.<br>
<br>
--<br>
Kevin P. Fleming<br>
Digium, Inc. | Director of Software Technologies<br>
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA<br>
skype: kpfleming | jabber: <a href="mailto:kpfleming@digium.com">kpfleming@digium.com</a><br>
Check us out at <a href="http://www.digium.com" target="_blank">www.digium.com</a> & <a href="http://www.asterisk.org" target="_blank">www.asterisk.org</a><br>
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