[SIPForum-discussion] should the INVITE be accepted or rejected?

[Keith Lin]

Hi Stephen,


Thanks for your answer. In practice, the UA ( a DrayTek router ) received
this packet from a Netherland ITSP.
The caller was a mobile phone.


regards,
Keith

2011/10/14 Aizon, Stephen, VF-NZ <Stephen.Aizon at vodafone.com>

>  Invite will not even reach the UA as this will be rejected by Redirect
> Server straight away because of different domain name received…****
>
> ** **
>
> *From:* discussion-bounces at sipforum.org [mailto:
> discussion-bounces at sipforum.org] *On Behalf Of *Keith Lin
> *Sent:* 11 October 2011 9:07 p.m.
> *To:* discussion at sipforum.org
> *Subject:* [SIPForum-discussion] should the INVITE be accepted or
> rejected?****
>
> ** **
>
> Hello everyone,****
>
> ** **
>
> Suppose there is an UA, who has registered successfully (as seen in M1 and
> M2 below).****
>
> Now if there comes an INVITE request (as seen in M3 below) to the UA, what
> should it reply? 200 OK? or? ****
>
> ** **
>
> My opinion is the UA should reject the INVITE, because the UA was
> registered with the URI draytec at test.winitu.com****
>
> The INVITE has a "to-header" of 31172759442 at 213.239.5.69****
>
> As you can see, both username part and domain/host part of the URI are
> different****
>
> That's why I reckon the UA should reject the INVITE......  what do you guys
> think?****
>
> ** **
>
> Thank you in advance****
>
> ** **
>
> ** **
>
> M1 - trying to register****
>
> --------------------------------------****
>
> REGISTER sip:test.winitu.com SIP/2.0****
>
> Via: SIP/2.0/UDP 10.14.0.12:5060;branch=z9hG4bK-baZ-2090457395;rport****
>
> From: 31172759442 <sip:draytec at test.winitu.com>;tag=qPb-1821832709****
>
> To: <sip:draytec at test.winitu.com>****
>
> Call-ID: WFZ-1501346479 at 10.14.0.12****
>
> CSeq: 554 REGISTER****
>
> Contact: <sip:draytec at 10.14.0.12>****
>
> Authorization: Digest username="draytec", realm="test.winitu.com",
> nonce="4e8ec82292bcbf9f47f4a24db8a35d3815f84dcc", uri="sip:test.winitu.com",
> response="edfb37427d91f45c1a10b2776f81196b", algorithm=MD5****
>
> Max-Forwards: 15****
>
> Expires: 3600****
>
> User-Agent: DrayTek UA-1.2.3 Vigor2130****
>
> Content-Length: 0****
>
> ** **
>
> ** **
>
> M2 - registered successfully****
>
> --------------------------------------****
>
> SIP/2.0 200 OK****
>
> Via: SIP/2.0/UDP 10.14.0.12:5060
> ;branch=z9hG4bK-baZ-2090457395;rport=5060;received=80.89.226.24****
>
> From: 31172759442 <sip:draytec at test.winitu.com>;tag=qPb-1821832709****
>
> To: <sip:draytec at test.winitu.com
> >;tag=2b942734826ad2dca07eef0e7632aeb1.715c****
>
> Call-ID: WFZ-1501346479 at 10.14.0.12****
>
> CSeq: 554 REGISTER****
>
> Contact: <sip:draytec at 10.14.0.12>;expires=3600;received="sip:
> 80.89.226.24:5060"****
>
> Content-Length: 0****
>
> ** **
>
> ** **
>
> M3 - incoming INVITE message****
>
> --------------------------------------****
>
> INVITE sip:draytec at 10.14.0.12 SIP/2.0****
>
> Record-Route: <sip:213.239.5.69;lr=on;ftag=20B9158-2341;nat=yes>****
>
> Via: SIP/2.0/UDP 213.239.5.69;branch=z9hG4bKb598.4282f896.0****
>
> Via: SIP/2.0/UDP  212.4.211.245:5060;rport=65139;x-route-tag="
> cid:DMS-TRUNK at 212.4.211.245";branch=z9hG4bK881C2564****
>
> From: "anonymous" <sip:anonymous at anonymous.invalid>;tag=20B9158-2341****
>
> To: <sip:31172759442 at 213.239.5.69>****
>
> Call-ID: 257F727-EFFE11E0-8B2CF4AB-C7084FB4 at 212.4.211.245****
>
> Supported: 100rel,timer,replaces****
>
> Min-SE:  1800****
>
> Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE,
> NOTIFY, INFO, UPDATE, REGISTER****
>
> CSeq: 101 INVITE****
>
> Max-Forwards: 69****
>
> Contact: <sip:0654331151 at 212.4.211.245:5060>****
>
> Expires: 180****
>
> Allow-Events: telephone-event****
>
> Content-Type: application/sdp****
>
> Content-Length: 306****
>
> Remote-Party-ID: "anonymous" <sip:anonymous at anonymous.invalid
> >;party=calling;screen=yes;privacy=full****
>
> To-Hint: sip:draytec at test.winitu.com****
>
> To-Number-Hint: 31172759442****
>
> From-Hint: sip:31654331151 at test.winitu.com****
>
> From-Number-Hint: sip:31654331151 at test.winitu.com****
>
> ** **
>
> v=0****
>
> o=CiscoSystemsSIP-GW-UserAgent 3678 740 IN IP4 212.4.211.245****
>
> s=SIP Call****
>
> c=IN IP4 212.4.211.245****
>
> t=0 0****
>
> m=audio 16462 RTP/AVP 8 18 101****
>
> c=IN IP4 212.4.211.245****
>
> a=rtpmap:8 PCMA/8000****
>
> a=rtpmap:18 G729/8000****
>
> a=fmtp:18 annexb=yes****
>
> a=rtpmap:101 telephone-event/8000****
>
> a=fmtp:101 0-16****
>
> a=direction:passive****
>
> ** **
>
> ** **
>
> regards,****
>
> Keith****
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