[SIPForum-discussion] Possible responses to 180 Ringing Messages

[Stephen James]

Some SIP specs (ITU Q.1912.5 comes to mind) require BYE as a mechanism to 
terminate a call if a early dialogue has been established.


 
Stephen James 
sjames_1958 at yahoo.com
 
We are not princes of the earth, we are the descendants of worms, and any 
nobility must be earned.





________________________________
From: Albert Etsebeth <umbrualbert at gmail.com>
To: discussion at sipforum.org
Sent: Fri, December 9, 2011 5:53:26 AM
Subject: [SIPForum-discussion] Possible responses to 180 Ringing Messages

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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