Hello,

I had previously put in some hacks to compensate for protocol errors
from ITSPs  such as responses to SDP solicitations that would return
an OK with NO SDP body. There are even those very badly mannered ITSPs
that randomly return OK to INVITE with no contact header at all. Very
bad form indeed.

I am removing those hacks from sipxbridge that were put in there to
compensate for such behaviors. Unfortunately, it becomes too
complicated to handle such situations gracefully and those hacks do
not work in all cases anyway, Henceforth, sipxbridge will  follow the
process of tearing down the call when critical protocol errors are
noticed. You will notice changes to this effect going into 4.2.1  This
may mean that your ITSP that was hitherto working sometimes may cease
to work in a consistent way. I will also be pruning the interoperable
providers list and removing at least one such provider from that list
which is known to exhibit such errors.

Please note that for sipxbridge to work, the provider must correctly
implement the SIP protocol.

Thanks

Ranga.



-- 
M. Ranganathan
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