<br>Hi.<br><br>My problem is the next. When my sip server send the message INVITE to the phone, the phone always respond with 400 Bad Request, I think is something wrong in the message, in the UDP message the Checksum always is corrupted by the sip server, is it the problem? or is something else in the sip message? How I can correct this?<br><br>this is the trace:<br><br>User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 7191 (7191)<br>Source port: 5060 (5060)<br>Destination port: 7191 (7191)<br>Length: 1057<br>Checksum: 0x879f [incorrect, should be 0xb0cd]<br>Session Initiation Protocol<br>Request-Line: INVITE sip:192.168.1.8:7191 SIP/2.0<br>Method: INVITE<br>Resent Packet: True<br>Suspected resend of frame: 9<br>Message Header<br>Record-Route: <sip:192.168.1.20;lr=on;ftag=db79a2e2><br>Via: SIP/2.0/UDP 192.168.1.20;branch=z9hG4bKdfe7.2eeeaa64.0<br>Via: SIP/2.0/UDP 192.168.1.7:7191;branch=z9hG4bKN2IVzrueyM<br>Max-Forwards: 69<br>Content-Type:
application/sdp<br>To: <sip:2109075@192.168.1.20><br>From: "4422109087" <sip:4422109087@192.168.1.20>;tag=db79a2e2<br>Call-ID: eea4130a-277bd7f8@192.168.1.7<br>CSeq: 1503273304 INVITE<br>Allow: INVITE, ACK, CANCEL, MESSAGE, OPTIONS, BYE, UPDATE, REFER, SUBSCRIBE, NOTIFY, SERVICE<br>User-Agent: PHONE-UserAgent<br>Contact: "4422109087" <sip:4422109087@192.168.1.7:7191><br>P-hint: usrloc applied<br>Message body<br>Session Description Protocol<br>Session Description Protocol Version (v): 0<br>Owner/Creator, Session Id (o): ntzum 717537891 1011557901 IN IP4 192.168.1.7<br>Session Name (s): -<br>Connection Information (c): IN IP4 192.168.1.7<br>Bandwidth Information (b): CT:29<br>Time Description, active time (t): 0 0<br>Media Description, name and address (m): audio 49648 RTP/AVP 4 96 97 98<br>Media Attribute (a): sendrecv<br>Media Attribute (a): rtpmap:4 G723/8000<br>Media Attribute (a): rtpmap:96 AMR/8000<br>Media Attribute (a): rtpmap:97
X-G723-7200/8000<br>Media Attribute (a): rtpmap:98 telephone-event/8000<br>Media Attribute (a): fmtp:98 0-15<br>Media Description, name and address (m): video 49650 RTP/AVP 99 100 34<br>Media Attribute (a): sendrecv<br>Media Attribute (a): rtpmap:99 H264/90000<br>Media Attribute (a): fmtp:99 packetization-mode=1<br>Media Attribute (a): rtpmap:100 H263-1998/90000<br>Media Attribute (a): rtpmap:34 H263/90000<br><br>Regards!<br><p> 
<hr size=1>
Do You Yahoo!?
La mejor conexión a Internet y <b>2GB</b> extra a tu correo por $100 al mes. <a href="http://net.yahoo.com.mx">http://net.yahoo.com.mx</a>