Hi, I've got SIP/2.0 482 Request merged on INVITE from successfully registered Huawei-MC820/1.0.0 UA. Conversation looks like: freeswitch@internal> recv 834 bytes from udp/[10.0.0.102]:5060 at 10:28:55.614664: ------------------------------------------------------------------------ INVITE sip:2101020@10.0.0.1 SIP/2.0 CSeq: 1 INVITE Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com Contact: <sip:102@10.0.0.102> Content-Length: 453 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1> Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11fef50f3 User-Agent: Huawei-MC820/1.0.0 Supported: 100rel Content-Type: application/sdp Max-Forwards: 70 v=0 o=Huawei 1313566095 1313566095 IN IP4 10.0.0.102 s=Sip Call c=IN IP4 10.0.0.102 t=0 0 m=audio 10050 RTP/AVP 8 0 15 18 101 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:15 G728/8000 a=rtpmap:18 G729/8000 a=rtpmap:101 telephone-event/8000 a=sendrecv m=video 10052 RTP/AVP 117 34 b=AS:192 a=rtpmap:117 H264/90000 a=rtpmap:34 H263/90000 a=fmtp:117 profile-level-id=42080D; max-br=194 a=fmtp:34 CIF=1 QCIF=1 MaxBR=1940 a=sendrecv ------------------------------------------------------------------------ send 298 bytes to udp/[10.0.0.102]:5060 at 10:28:55.615140: ------------------------------------------------------------------------ SIP/2.0 100 Trying Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11fef50f3 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1> Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com CSeq: 1 INVITE User-Agent: FreeSWITCH-mod_sofia/1.0.head-hacked-20110816T130734Z Content-Length: 0 ------------------------------------------------------------------------ send 653 bytes to udp/[10.0.0.102]:5060 at 10:28:55.615973: ------------------------------------------------------------------------ SIP/2.0 407 Proxy Authentication Required Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11fef50f3 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1>;tag=U9D95t1myaeNH Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com CSeq: 1 INVITE User-Agent: FreeSWITCH-mod_sofia/1.0.head-hacked-20110816T130734Z Accept: application/sdp Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY Supported: timer, precondition, path, replaces Allow-Events: talk, hold, refer Proxy-Authenticate: Digest realm="10.0.0.1", nonce="b5d47364-c8bb-11e0-9704-7d44b5f0bd2d", algorithm=MD5, qop="auth" Content-Length: 0 ------------------------------------------------------------------------ recv 260 bytes from udp/[10.0.0.102]:5060 at 10:28:55.687752: ------------------------------------------------------------------------ ACK sip:2101020@10.0.0.1 SIP/2.0 CSeq: 1 ACK Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com Content-Length: 0 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1>;tag=U9D95t1myaeNH Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11fef50f3 ------------------------------------------------------------------------ recv 1072 bytes from udp/[10.0.0.102]:5060 at 10:28:55.706532: ------------------------------------------------------------------------ INVITE sip:2101020@10.0.0.1 SIP/2.0 CSeq: 1 INVITE Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com Contact: <sip:102@10.0.0.102> Content-Length: 453 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1> Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11a279953 User-Agent: Huawei-MC820/1.0.0 Supported: 100rel Proxy-Authorization: Digest username="102",realm="10.0.0.1",nonce="b5d47364-c8bb-11e0-9704-7d44b5f0bd2d",uri="sip:2101020@10.0.0.1",response="199c0f493e04ab89c6b8ab2dcc1a4ae4",algorithm=MD5,cnonce="6c64988847d3f764",qop=auth,nc=00000001 Content-Type: application/sdp Max-Forwards: 70 v=0 o=Huawei 1313566095 1313566096 IN IP4 10.0.0.102 s=Sip Call c=IN IP4 10.0.0.102 t=0 0 m=audio 10050 RTP/AVP 8 0 15 18 101 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:15 G728/8000 a=rtpmap:18 G729/8000 a=rtpmap:101 telephone-event/8000 a=sendrecv m=video 10052 RTP/AVP 117 34 b=AS:192 a=rtpmap:117 H264/90000 a=rtpmap:34 H263/90000 a=fmtp:117 profile-level-id=42080D; max-br=194 a=fmtp:34 CIF=1 QCIF=1 MaxBR=1940 a=sendrecv ------------------------------------------------------------------------ send 257 bytes to udp/[10.0.0.102]:5060 at 10:28:55.706753: ------------------------------------------------------------------------ SIP/2.0 482 Request merged Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bK11a279953 From: <sip:102@10.0.0.1>;tag=1728f3d7 To: <sip:2101020@10.0.0.1>;tag=U9D95t1myaeNH Call-ID: 75b760e11a9f9c7b4be7251c4f381d55@huawei.com CSeq: 1 INVITE Content-Length: 0 What is wrong? -- Thanks, Eugene Prokopiev