> 
> I am somewhat doubtful that the DTMF setting are at issue here. I say that 
> because whether through an Ingate, PRI or sipxbridge I have never seen this. 
> All the above does is indicate someone pressed a key a bunch of times.
> 
> Is a siptrace available?
> 
> Tony

Tony,
   His trace is actually showing him holding down the 9 key once. The RTP event 
for dtmf is sent many times for a single keypress, each time it goes out it 
extends DTMF on that tone for N more MS, presumably this is to allow to packet 
loss. A single digit dialed will usually have a bunch of these events then when 
the user releases the key you get a burst of the same event with the 'end' bit 
set. In the trace he sent he's hitting the key for about 250ms (it doesn't show 
the duration extension in his decode, I think it was 50ms using polycom 
defaults).

  What would be really interesting trace wise is the SDP headers showing the 
offer/response for telephony events (from the invite and the ack). If the ITSP 
is accepting these, at 101 even, and then not acting on them on it sure seems 
like they're broken. If it were me I would take the trace of a single failed 
call outside the firewall using a packet sniffer just to narrow the problem 
down to something on the sipxecs side or the itsp side. The extra internal 
chatter in the sipxecs traces is only interesting if something bad is happening 
between the ITSP and whatever is closest to them at the customer site.

-Eric

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