On Mon, 2010-03-01 at 07:33 -0500, M. Ranganathan wrote:
> Attached is a trace for a PBX initiated blind transfer for an outbound
> call to bandwidth.com. Lately I have noticed that bandwidth.com
> behavior has changed. It now returns Request Pending ( 491 ). I cannot
> figure out why this is the case. The signalling from sipxbridge seems
> to be fine.
> 
> I would appreciate a second opinion on the attached trace before I
> take this forward to bandwidth.com. This is a show stopper for
> interoperability with bandwidth.com.

It appears as if bandwidth.com had not received the ACK from the
previous re-INVITE, or it had just sent an INVITE/UPDATE which crossed
with sipXbridge's re-INVITE, but either situation would show messages
from bandwidth.com that do not appear in the trace.  It seems like a
definite error on their part, and of course, if bandwidth.com refuses to
accept a re-INVITE, there is nothing we can do.

Dale


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