Xavier Cardil schrieb: > Hi, I've managed to get HYLAFAX---->T38MODEM-----> > ASTERISK---->CISCOAS5400 working, but when they are negotiating asterisk > drops a message telling "Unknown RTP codec 96 received from gateway" Do > somebody know how to fix it ? > > Thank you ! > > > > << [ TYPE: Control (4) SUBCLASS: Ringing (3) ] [SIP/GWCISCO5400O-600bfcc8] > << [ TYPE: Control (4) SUBCLASS: Answer (4) ] [SIP/GWCISCO5400O-600bfcc8] > << [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-600bfcc8] > << [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-600bfcc8] > << [ TYPE: Control (4) SUBCLASS: T38/Negotiation Requested (19) ] > [SIP/GWCISCO5400O-600bfcc8] > << [ TYPE: Null Frame (5) SUBCLASS: N/A (0) ] [SIP/GWCISCO5400O-600bfcc8] > [Jul 16 17:50:39] NOTICE[2736]: rtp.c:1739 ast_rtp_read: Unknown RTP > codec 96 received from '192.168.3.163'
Is '192.168.3.163' the Cisco GW? If yes, then it is probably an NSE packet. NSE is a Cisco proprietary FaxoverIP solution and uses per default payload types 96 and 97 to signal a changeover from VoIP to FoIP. Probably you have to configure the Cisco GW to use T.38 instead of NSE for FoIP. regards klaus _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users