Hi all,
   I tried to call a sip user through OPENSIPS several times but failed.I 
analyzed that there was something wrong with Via branch.
The SIP messages are as follow:

OPENSIPS -->SIPp
INVITE sip:[email protected]:5062 SIP/2.0
Record-Route: <sip:10.11.68.93;lr=on>
Via: SIP/2.0/UDP 10.11.68.93;branch=z9hG4bK885f.d77bb1c7.0
Via: SIP/2.0/UDP 
10.11.68.93:5064;received=10.11.68.93;rport=5064;branch=z9hG4bKgplqohzs
Max-Forwards: 69
To: <sip:[email protected]>
From: "vleeboy" <sip:[email protected]>;tag=ehhcd
Call-ID: [email protected]
CSeq: 500 INVITE
Contact: <sip:[email protected]:5064>
Content-Type: application/sdp
Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE
Organization: opensips
Supported: replaces,norefersub,100rel
User-Agent: Twinkle/1.1
Content-Length: 305
P-hint: (5)what's wrong
P-hint: (7)what's wrong

v=0
o=vleeboy 171118263 576376527 IN IP4 10.11.68.93
s=-
c=IN IP4 10.11.68.93
t=0 0
m=audio 8000 RTP/AVP 98 97 8 0 3 101
a=rtpmap:98 speex/16000
a=rtpmap:97 speex/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:20

SIPp -->OPENSIPS
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 10.11.68.93;branch=z9hG4bK885f.d77bb1c7., SIP/2.0/UDP 
10.11.68.93:5064;received=10.11.68.93;rport=5064;branch=z9hG4bKgplqohzs
From: "vleeboy" <sip:[email protected]>;tag=ehhcd
To: <sip:[email protected]>;tag=1
Call-ID: [email protected]
CSeq: 500 INVITE
Contact: <sip:127.0.1.1:5062;transport=UDP>
Content-Length: 0

SIPp -->OPENSIPS
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.11.68.93;branch=z9hG4bK885f.d77bb1c7., SIP/2.0/UDP 
10.11.68.93:5064;received=10.11.68.93;rport=5064;branch=z9hG4bKgplqohzs
From: "vleeboy" <sip:[email protected]>;tag=ehhcd
To: <sip:[email protected]>;tag=1
Call-ID: [email protected]
CSeq: 500 INVITE
Contact: <sip:127.0.1.1:5062;transport=UDP>
Content-Type: application/sdp
Content-Length:  129

v=0
o=user1 53655765 2353687637 IN IP4 127.0.1.1
s=-
c=IN IP4 127.0.1.1
t=0 0
m=audio 6000 RTP/AVP 0
a=rtpmap:0 PCMU/8000

See that from OPENSIPS the Via header is "Via: SIP/2.0/UDP 
10.11.68.93;branch=z9hG4bK885f.d77bb1c7.0".The Via header from SIPp is "Via: 
SIP/2.0/UDP 10.11.68.93;branch=z9hG4bK885f.d77bb1c7.".Maybe the Via branch from 
OPENSIPS is too long to parse by SIPp? Can I solve the problem by some 
configurations?
Thanks a lot for your help!



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