Hi,
Thanks for the response. I agree that if the 487 is forwarded early the
transaction is over. Can the proxy store the 487 and send it after the
second dialog is established. If no final response is sent for the
initial dialog established by F4 and F5, when will this gets cleared? Is
it by timeout?
Thanks,
neel.
Alan Johnston <[EMAIL PROTECTED]>@cs.columbia.edu on 10/04/2002
05:08:36 PM
Sent by: [EMAIL PROTECTED]
To: Balasubramanian Neelakantan/MW/US/3Com,
[EMAIL PROTECTED]
cc:
Subject: Re: [Sip-implementors] SIP Service examples: Call Forwarding - No
Answer
Hi,
Thanks for your comments on the draft.
If the proxy forwarded the 487 to A, the INVITE transaction would be over
and A would think the call failed, as only one final (2xx-6xx) response
can be received for a request.
Thanks,
Alan Johnston
WorldCom
sip:[EMAIL PROTECTED]
At 02:13 PM 10/4/2002 -0500, [EMAIL PROTECTED] wrote:
>In draft-ietf-sipping-service-examples-02.txt, section 2.8 Call Forwarding
>- No Answer,
>
>When Proxy forwards 180 from B1 (F4 and F5), an early dialog is
established
>(as the to tag is added here). The Proxy then sends another 180 from B2
>(F11 and F12), which establishes another early dialog. This (second part
>of the call) gets connected and the INVITE transaction completes
>successfully. But the first early dialog does not gets completed and it
>gets cleaned up upon timeout.
>
>My question is, does the 487 (F8) sent by B1 be forwarded to User A, as
>otherwise the first early dialog will gets cleaned up only after timeout?
>
>Thanks,
>neel.
>
>
>
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