[Asterisk-Users] Double DTMF with tdm card

Walt Reed asterisk at linuxguy.com
Thu Nov 3 10:57:43 MST 2005


Frankly, I think this may be happening to me too. It's still a "zap to
zap" channel problem.

On Thu, Nov 03, 2005 at 08:27:59AM -0800, Bart Fisher said:
> My problem is slightly different as there is 2 T1 Ports involved - With a 
> T1 test set I can clearly hear two tones sent quickly with each outside 
> caller press.  I assume one of the tones is the actual audio passing thru 
> the connection and the other generated by the T1 card itself.    If I make 
> the same test with a TDM400 as input connection and the TE410P port as 
> output connection, there is no double dialing. Same results if an inside 
> extension is used as input connection.  It only happens if it's a T1 to T1 
> Bridge...
> 
> If it is a regenerated tone from the TE410, it seems there should be some 
> option to stop listening for tone touch after connection has been 
> established?
> 
> Bart
> 
> 
> ----- Original Message ----- 
> From: "Walt Reed" <asterisk at linuxguy.com>
> To: "Eric ManxPower Wieling" <eric at fnords.org>
> Cc: "Walt Reed" <asterisk at linuxguy.com>; "Asterisk Users Mailing List - 
> Non-Commercial Discussion" <asterisk-users at lists.digium.com>
> Sent: Thursday, November 03, 2005 6:50 AM
> Subject: Re: [Asterisk-Users] Double DTMF with tdm card
> 
> 
> >Note this is on external calls to external applications.... Not Asterisk
> >DTMF detection. It's as though DTMF is distorted when going through a
> >TDM fxs port, or that it's being caught (too late) and then
> >retransmitted. Does * intercept outgoing dtmf?
> >
> >I haven't found good docs that tell exactly what relaxdtmf does.
> >
> >On Thu, Nov 03, 2005 at 08:01:03AM -0600, Eric ManxPower Wieling said:
> >>Did you try relaxdtmf=no
> >>
> >>Walt Reed wrote:
> >>>Nope - I saw your posts on it though. Very frustrating. I've had to
> >>>discontinue use of my TDM FXS ports until some solution is found.
> >>>
> >>>On Wed, Nov 02, 2005 at 10:18:47AM -0800, Bart Fisher said:
> >>>
> >>>>Did you ever find a solution for this problem?  I have it on latest 
> >>>>Beta 2
> >>>>
> >>>>Bart
> >>>>
> >>>>
> >>>>----- Original Message ----- 
> >>>>From: "Walt Reed" <asterisk at linuxguy.com>
> >>>>To: <asterisk-users at lists.digium.com>
> >>>>Sent: Friday, October 21, 2005 7:26 AM
> >>>>Subject: [Asterisk-Users] Double DTMF with tdm card
> >>>>
> >>>>
> >>>>
> >>>>>I have a TDM22B (latest rev), Sipura 2000, and Cisco ATA 186. Running
> >>>>>CVS HEAD from about a week ago.
> >>>>>
> >>>>>Calls made from a SIP device on either the cisco or sipura work fine.
> >>>>>
> >>>>>Call made from an analog phone hooked up to one of the FXS ports on 
> >>>>>the
> >>>>>TDM22B  sound fine, but any DTMF entered after the call is bridged to 
> >>>>>an
> >>>>>outside number (like entering a PIN for a bank or external conference
> >>>>>bridge) is frequently doubled.  Entering 1234 may be recognized as
> >>>>>112344 for example.
> >>>>>
> >>>>>I ran fxotune, and played with the rx and tx gains a little, but have
> >>>>>been unable to resolve the problem...
> >>>>>
> >>>>>* has no problem dialing outside numbers. It's just DTMf after the 
> >>>>>call
> >>>>>is bridged between zap channels...
> >>>>>
> >>>>>Any ideas?
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