Martin, Upon consideration, if I had to bet, I'd say it was the packet loss causing the tone to break up. With packet voice, that's just the most likely scenario I can imagine. I'd say listen in on the asterisk side or record the call to a good quality wav file and listen to see if the DTMF breaks up.
Dave On 3/30/06, Martin Glazer <[EMAIL PROTECTED]> wrote: > > Dave, > > Thanks for the thoughts - I never thought of Primus replacing the DTMF > tones, > but I will certainly check that out. > > Yes I am using their ATA, which is a Dlink dvg1120 - I did manage to get > into > the web interface and poked around, but nothing jumped out at me with > respect > to the DTMF. > > The other thing I thought to try was a different internet connection, just > to > rule out the connectivity issue. > > On further testing, the problem is intermittent, although failing much > more > often than not. > > As an aside, hangup detection is also not working on this line - according > to > Primus they use current interruption to indicate a hangup, but whatever > parameters I've tried in Asterisk have no effect. > > Thanks > > Martin > > > > > On March 29, 2006 22:12, Dave Donovan wrote: > > Have you tried listening to the analog side of the Primus line with a > > regular telephone? I assume you're using a Primus provided ATA since > you > > mention the TDM400. Sometimes systems use what I've heard termed "DTMF > > Clamping". They listen for a tone and then interrupt the audio stream > and > > replace it with their own, usually of a fixed duration. Perhaps you're > > getting the first fraction of a tone, then the clamping kicks in and > plays > > a full tone. > > > > An easy way to check for this DTMF clamping is to hold down the key. If > > you hold the key for 10 seconds and what comes out at the other end is a > 1 > > second tone, then something in the middle is replacing your tone. > > > > Also consider that if the audio is choppy, the tone may come through > > partially, then drop out due to packet loss or jitter or whatever then > come > > back and be heard some more. This may cause the tone to be detected as > > though a key were pressed twice. I've had this on my cel phone when the > > connection quality is poor. > > > > As for relaxDTMF, I'd think that you want it tightened, not relaxed. > > You're not failing to detect DTMF, you're detecting it too quickly or > > sensitively. > > > > These are just a few thoughts. I can't say I've experienced your > problem > > first hand. > > > > Good Luck > > Dave > > > > On 3/29/06, Martin Glazer <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > > > Thanks for the all suggestions on wireless SIP phones, but now I have > a > > > more > > > pressing problem. > > > > > > I've just setup a small Asterisk server which is connected to a Primus > > > Voip > > > line (as a regular PSTN line) going into a Digium FXO card (TDM400P). > I > > > am having a number of issues with the Primus line and was wondering if > > > anyone had come across this previously or could recommend a solution, > > > besides getting rid of the Primus line :-( > > > > > > - on an incoming call DTMF tones on the Primus line are doubled (ie, > > > press 1 > > > and I see in the Asterisk logs that 1 and then 1 was pressed). Not all > > > digits > > > are doubled. This obviously causes problems with the IVR and > attempting > > > to get to particular extensions. > > > > > > I have tried adding relaxdtmf=yes in my zapata.conf file, but this > makes > > > no > > > difference. > > > > > > Thanks > > > > > > Martin > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > -- > > David Donovan > > Consultant > > Fulcrum Solutions > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- David Donovan Consultant Fulcrum Solutions
