To will be parsed as null，This message is generated by mac software, telephone。

[jinsuojinsuo]

To will be parsed as null，This message is generated by mac software, telephone。

INVITE sip:[email protected]:9910 SIP/2.0 Via: SIP/2.0/UDP 125.34.208.105:61187;rport;branch=z9hG4bKPjfKaxrWpsvm-e7BLZRChpcNDLykxPJ4B1 Max-Forwards: 70 From: "8001" sip:[email protected];tag=qN-0Y9yR2bFZgG7i8OTYaOaFTKPWMMR7 To: sip:[email protected] Contact: sip:[email protected]:61187;ob Call-ID: tQiy-MRgE4.DucuID.j3evkm-4ykUC73 CSeq: 26213 INVITE Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS Supported: replaces, 100rel, norefersub User-Agent: Telephone 1.5.2 Content-Type: application/sdp Content-Length: 443

v=0 o=- 3832828136 3832828136 IN IP4 125.34.208.105 s=pjmedia b=AS:117 t=0 0 a=X-nat:0 m=audio 4002 RTP/AVP 96 9 8 0 101 102 c=IN IP4 125.34.208.105 b=TIAS:96000 a=rtcp:4003 IN IP4 125.34.208.105 a=sendrecv a=rtpmap:96 opus/48000/2 a=fmtp:96 useinbandfec=1 a=rtpmap:9 G722/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/48000 a=fmtp:101 0-16 a=rtpmap:102 telephone-event/8000 a=fmtp:102 0-16