[Asterisk-Users] Re: Zap channel calling back after hangup (dueto polarity CID detection)

[Bartek Kania]

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On Tue, 1 Mar 2005, Anders F Eriksson wrote:
> > > I'm running CVS-HEAD-02/28/05-23:18:39 at the moment, and
> > it still happens.
> > > I've seen the bugs in Mantis, but the answeronpolarity
> > doesn't seem to
> > > make any difference ...
> > Could you post a debug-log of when it happens?
> > (enable debug and verbose in logger.conf)
> This is the log:

Ok, it seems the zaptel-driver is a little sensitive in your case:

<snip>
> Mar  1 13:57:22 VERBOSE[15246]:   == Starting post polarity CID detection on
> channel 4
> Mar  1 13:57:22 VERBOSE[15256]:     -- Starting simple switch on 'Zap/4-1'
> Mar  1 13:57:22 DEBUG[15256]: Receiving DTMF cid on channel Zap/4-1
> Mar  1 13:57:23 DEBUG[15256]: Exception on 19, channel 4
> Mar  1 13:57:23 DEBUG[15256]: Got event Ring/Answered(2) on channel 4 (index
> 0)
> Mar  1 13:57:23 DEBUG[15256]: Setting IDLE polarity due to ring. Old
> polarity was 1

The problem is the "Got event Ring/Answered(2)" line.
Normally, a ring should not be detected and the DTMF-cid times out and
no incoming call is registered.
Make sure you load wctdm with the parameter 'opermode=SWEDEN', it might help.
You might also try to increase the 'RING_DEBOUNCE' define in wctdm.c.
If you load wctdm with debug=1 it prints some useful information to
the kernel log for tuning the RING_DEBOUCE.

/B
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