Hi,

I have been trying to understand the SIP messages used in Winphoria's (which is now Motorola) PTT application.

So far I did not find anything on the Web.

I know they have a proprietary SIP version (3.c), but
if someone could explain the SDP part of the messages,
what are the items like:

f: ...
x: ...

and the logic behind the solution (for example: are all the PTT
session created ad-hoc, or is there an offline creation and online activation).

I need the information as i would like to sniff the control sessions and log the states of the sessions and clients.


yours,

ha

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