[Asterisk-Users] Sip flow diagram? Answers

[Rich Adamson]

For the purposes of future archive searches, the following is a 
summary from those that responded. Thanks very much to everyone!!!!

http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_programming_reference_guide_book0
9186a0080080221.html
http://www.faqs.org/rfcs/rfc3261.html
http://www.iptel.org/info/players/ietf/callflows/

------------------------
> > 
> > Does anyone have a high level flow diagram showing acceptable sip
> > messages exchanges?
> > 
> > For exampe:
> >   Source         Dest
> >   Invite   ->
> >            <-    Trying
> >   Ok       ->
> > 
> > I'm specifically trying to debug an issue with various hangups, prior
> > to call completion, after call completion, "calling" vs "called" party
> > hold, etc, and getting rather confused watching the various packets
> > flowing between sip devices with a sniffer (and no reference document).
> > 
> > Rich