Hello Klaus,
please check this thread:
http://www.mail-archive.com/sip-implementors@lists.cs.columbia.edu/msg10537…
On 03/14/2012 05:11 PM, Klaus Darilion wrote:
I wonder if a presence server may send a NOTIFY if the
previous NOTIFY
in the dialog did not received an answer yet. I "grep"ed the relevant
RFCs but couldn't find a definition. Thus, pointers are appreciated.
HTH.
Andrew