[SIPForum-discussion] Possible responses to 180 Ringing Messages

[PIERRE Laurent]

Hi,

I think BYE is the third.
It is not illegal to send a BYE in the early state to terminate a
specific early dialog (RFC5407)


--
Laurent PIERRE
http://www.linkedin.com/in/lpierre


2011/12/9 Albert Etsebeth <umbrualbert at gmail.com>
>
> Hi All
>
> I got this question in a exam, and its been driving me mad.
>
> Question:"what are valid responses to 180 ringing" (Choose 3)
>
> Options:PRACK / ACK / BYE /CANCEL /INVITE
>
> In my opinion there is only 2, PRACK and CANCEL
>
> Thanks
>
> umbru
>
>
>
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