[Asterisk-Users] Module nonsense (zaptel, wcfxs and wxfxo)

Justin Carlson justin at lach.net
Tue Jun 8 14:46:35 MST 2004


I have had similar troubles and doing a modprobe -r zaptel then
re-loading the zaptel modules seems to cure it. ( if you unload the
wcfxo ztdummy wct1xxp.... etc it leaves the zaptel module loaded.)
On Tue, 2004-06-08 at 07:25, Rich Adamson wrote:
> > I've been playing with two pieces of hardware:  a X100P and a TDM400P with an 
> > FXO and two FXS modules.  I had been using just the TDM
> > card;  however, the TDM FXO module seems to hear things and "answer" the 
> > telephone for no reason, and I wanted to compare the results
> > with an X100P card.
> 
> Yes, same issue here. I'm not a programmer, so my comments are based on 
> observations only. For whatever reason, the TDM card is far more sensitive
> to analog line activities then was the x100p. Simply taking a bridged analog
> phone off hook and back on hook causes the TDM card to assume the phone is
> ringing. Also, female voices on the analog side tend to be interpreted
> as ringing as well (that's with callprogress=no).
> 
> > If you want further details, I can give them to you, but suffice it to say 
> > that trying to work with both cards and both modules has been
> > incredibly frustrating.  Modules that won't load, or that load but don't 
> > work when you run Asterisk, or Asterisk segfaulting even though the
> > modules *seem* to load properly...
> 
> Observed the same here on RH v9. System has been mostly stable for over six
> months in terms of processing calls, but doing 'service zaptel stop' and 
> start (after stopping *) leads to unpredictable results. Usually can get 
> by with one or two, but anything after that leads to failures that 
> require a system reboot. The exact number varies.
> 
> Other observations tend to suggest echo cancellation is not any better 
> on the TDM compared to the x100p, and the amount of echo seems to change
> from time to time with no noticable correlation to other system events.
> CallerID on the TDM seems to be less reliable then the x100p (more ID's
> showing up as 'asterisk' when a bridged analog phone receives the ID's
> just fine).
> 
> I'm using three pstn lines from two different central offices and two
> different ring cadences. Inbound and outbound calls are processed correctly,
> and echo (and other unusual * activities) is the same across all three 
> lines. (The TDM card runs on a dedicated interrupt, and CVS-HEAD-05/28/04.)
> 
> Unplugging a pstn line from the TDM card (and reconnecting) creates some
> rather unusual events too.
> 
> Guess its time to open a bug report even though we don't have any significant
> technical data that would help debug the problems.
> 
> Rich
> 
> 
> 
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