Dear All,

Could anyone please help me out on the below problem please.

Thanks,
Nitin

On Tue, May 1, 2012 at 8:37 AM, PUNJABI BOY <[email protected]> wrote:

> Dear All,
>
> I need the help from in one of my sip call scenario. Call flow is as below.
>
> UA -> 187.28.162.5 -> SBC Realm 1 (200.182.99.75) -> Machine SIP Realm 1
> (187.60.58.133) -> SBC Realm 2 (187.60.52.80) -> Termination Provider Realm
> 1 (200.216.239.196).
>
>
> However the problem i am seeing rightnow is that whenever my SBC is
> sending the call from from *second last entity to Termination Provider
> REALM1 then the termination provider realm is not replying to the INITIAL
> invite at all.*
>
>
> Although i checked the content type value in message body and seeing
> something odd, not sure if this is the valid headers or not as below.
>
>
> UA--->to SBC(And in this SBC recieved the INVITE from UAC and forwarded to
> next hope(Which means SBC Ingress realm and it sends the 100 Trying)
>
>
> =====
>
> Content-Length: 455
>
> Content-Type: multipart/mixed;boundary=ssboundary
>
>
> --ssboundary
>
> Content-Length: 249
>
> Content-Type: application/sdp
>
> =====
>
>
> Also SDP
>
> ======
>
> m=audio 17774 RTP/AVP 18 8 4 2
>
> a=rtpmap:18 G729/8000
>
> a=rtpmap:8 PCMA/8000
>
> a=rtpmap:4 G723/8000
>
> a=rtpmap:2 G726-32/8000
>
> a=fmtp:18 annexb=yes
>
> --ssboundary
>
> Content-Length: 30
>
> Content-Type: application/isup;version=itu-t92+
>
>
> ..h.
>
> ..
>
> ......%.....
>
> ....#v.C.
>
> --ssboundary--
>
> =====
>
>
> *Now from here the situation got worst where Termination Realm is not
> replying to MSX at all, where also i can see another VIA header is added by
> MSX(could by due to proxy)*
>
>
> ======
>
> INVITE sip:[email protected];user=phone SIP/2.0
>
> Max-Forwards: 66
>
> Session-Expires: 3600;refresher=uac
>
> Min-SE: 600
>
> Supported: timer, 100rel
>
> To: <sip:[email protected]:5060;user=phone>
>
> From: <sip:[email protected]>;tag=3544361906-29701
>
> Call-ID: [email protected]
>
> CSeq: 1 INVITE
>
> Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER,
> SUBSCRIBE, PRACK, UPDATE, MESSAGE, PUBLISH
>
> Record-Route: <sip:187.60.58.133>
>
> Via: SIP/2.0/UDP 187.60.58.133:5060;branch=z9hG4bK60c2d2733c5e07c55fee0d1
>
> Via: SIP/2.0/UDP 200.182.99.75:5060
> ;branch=z9hG4bK9d9c30880484a3108ccd4d447b928f24
>
> Contact: <sip:[email protected]:5060>
>
> Call-Info:
> <sip:200.182.99.75>;method="NOTIFY;Event=telephone-event;Duration=1000"
>
> Content-Type: multipart/mixed;boundary=1140858378-1335373106-29811
>
> Content-Length: 459
>
>
> --1140858378-1335373106-29811
>
> Content-Type: application/SDP
>
>
> v=0
>
> o=RISNEXT01 24425908 24425908 IN IP4 200.182.99.75
>
> s=sip call
>
> c=IN IP4 200.182.99.92
>
> t=0 0
>
> m=audio 47666 RTP/AVP 18 8 4 2
>
> a=rtpmap:18 G729/8000
>
> a=rtpmap:8 PCMA/8000
>
> a=rtpmap:4 G723/8000
>
> a=rtpmap:2 G726-32/8000
>
> a=fmtp:18 annexb=yes
>
>
> --1140858378-1335373106-29811
>
> Content-Type: application/ISUP;version=itu-t92+
>
> ======
>
> Could anyone please check and help me to investigate the issue. For the
> reference i also attached both legs of ethereal traces.
>
> Thanks,
> Nitin
>
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