[SIPForum-discussion] Diversion Header (INVITE Without SDP)

[Raj Jain]

Diversion is a non-standard header, so it's hard to say what's the
expected behavior when you have duplicates or non-contiguous counters.
You make want to take a look at History-Info (RFC 4244).

--
Raj Jain


On Fri, Nov 14, 2008 at 2:57 PM, Shakil, Rashid <rshakil at covad.com> wrote:
> Hello,
>
>
>
> While working with SIP carrier I came across to an issue where particular
> SIP providers rejecting my calls to a cell phone number. The call happen to
> be a redirected call (means inbound call redirected to an offnet TN). For
> the redirected call (call to an offnet number) our AS is sending an INVITE
> without SDP with diversion headers. My SIP carrier is saying that the issue
> is because we are sending two identical diversion headers and we should only
> send "1" and the other thing they pointed out is the "counter=3" in
> diversion header. They mentioned that the "counter" should be 1 instead of
> three. Can anyone please tell me if sending 2 identical diversions is a
> problem also what is the significance of "counter" in diversion header.
>
>
>
> INVITE sip:7202730836 at 67.135.78.227:5060 SIP/2.0
>
> Via: SIP/2.0/UDP 78.33.28.55:5060;branch=z9hG4bKut2ins00bo7gqdkee7s0.1
>
> From:
> <sip:7034319130 at 78.33.28.55>;tag=9ae82760-1dd1-11b2-a243-b03162323164+a4c9e520
>
> Contact:
> <sip:SDao6c8-u2tgvd144pfmf20a2i22ll3v2pmhvmhvg8rpfgsg4opsvii33es1000010 at 78.33.28.55:5060;transport=udp>
>
> To: <sip:2405993731 at 67.15.78.227>
>
> Call-ID: 2563935-1801424197 at 69.22.23.61
>
> CSeq: 2 INVITE
>
> Max-Forwards: 69
>
> Allow: INVITE,BYE,ACK,CANCEL,PRACK,REFER,OPTIONS,REGISTER,NOTIFY
>
> Diversion:
> <sip:2405993731 at 69.22.23.65>;reason=no-answer;privacy=off;counter=3
>
> Diversion:
> <sip:2405993731 at 69.22.23.65>;reason=no-answer;counter=3;privacy=off
>
> Remote-Party-ID: "7034319130"
> <sip:7034319130 at 69.22.23.65>;party=calling;id-type=subscriber;privacy=off
>
> P-Asserted-Identity: "7034319130" <sip:7034319130 at x.com>
>
> Content-Length: 0
>
>
>
>
>
> RS
>
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