you are one email behind i think. Problem is that FS only sends 2833 while it's busy doing something so you have to keep FS reading audio to trigger the outbound dtmf. On Wed, Nov 5, 2008 at 3:37 PM, Klaus Teller <klaus.teller@gmx.net> wrote:
I'm updating now and will try the flush dtmf. I yet have a hard time understanding how this is related to sending DTMF (instead of reading DTMF). This because:
1) The same problem appears when i replace sending DTMF with playing an audio file 2) Introducing a delay between READING Dtmf and playing the file prevents the issue to appear.
Ideas?
Klaus.
-------- Original-Nachricht --------
Datum: Wed, 5 Nov 2008 15:24:33 -0600 Von: "Anthony Minessale" <anthony.minessale@gmail.com> An: freeswitch-users@lists.freeswitch.org Betreff: Re: [Freeswitch-users] Inband DTMF Problem
When you call send dtmf and it's rfc2833 you must sleep to give it a chance to send. the variable last_dtmf_duration is always set on the channel with how long you should execute sleep on the channel in the case of 2833
so call send_dtmf execute sleep ${last_dtmf_duration}
On Wed, Nov 5, 2008 at 3:08 PM, Klaus Teller <klaus.teller@gmx.net> wrote:
OK, we made some progress on this issue. It appears that if we introduce 50ms delay between the reading (not playing) of the DTMF and the playing of the file (or the sending of DTMF), the problem doesn't occur. And if we place many such calls this delay needs to be increased.
What i suspect is happening is that there is some sort of race condition or interference between the event processing part of Freeswitch and the handling of synchronous commands such as sending dtmf. I recall Anthony saying few days ago that event delivery is paused when a command execution request arrives. So, would it be possible that command execution requests are able to interfere on the deliverying of events?
Thanks, Klaus.
-------- Original-Nachricht --------
Datum: Wed, 5 Nov 2008 14:35:16 -0600 Von: Brian West <brian@freeswitch.org> An: freeswitch-users@lists.freeswitch.org Betreff: Re: [Freeswitch-users] Inband DTMF Problem
Extract the RTP audio into wav/au files in wireshark and lets look at them.
/b
On Nov 5, 2008, at 2:30 PM, Klaus Teller wrote:
Hi Anthony,
Let me add some few facts.
1) I am sending DTMF using RFC2833 and the IVR is using Inband 2) The problem is not limited to when i send DTMF. It also happens when i try to play a file. 3) The functions are from my java code. They send commands to Freeswitch via socket interface. 4) The same functions are working perfectly when the remote IVR sends DTMF via RFC2833. 5) I have a pause of 2000 ms after sending the DTMF.
Let me reformulate my problem. I have a spurious dtmf-# being detected by freeswitch where nothing was sent by the other party.
The strange thing to me is that Wireschark (running on the same machine as Freeswitch) detects the proper digit sequence.
Klaus.
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