[Asterisk-Users] Distinctive Ring Detection not working

[Howard Lowndes]

I have a similar problem in Australia and I think it has to do with 
chan_zap.c

Currently Digium are investigating it for me as it is in association 
with one of their TDM400P cards.

Gonzalo Servat wrote:
> Hi there.
> 
> I'm having a strange issue with the distinctive ring detection in
> Asterisk (I have a FXO card).
> It certainly seems to be enabled as I can see the Asterisk console
> spitting out the cadences (same cadence every time: 0,0,0) but the
> problem is that it is not waiting 2 seconds after "Starting switch on
> Zap/1-1" like it used to, long enough to determine the cadences,
> presumably the reason why it is always 0,0,0 as it hasn't had enough
> time to detect the ring pattern.
> 
> My zapata.conf looks like the following:
> 
> [trunkgroups]
> [channels]
> language=es
> context=incoming-landline
> signalling=fxs_ks
> usedistinctiveringdetection=yes
> usecallerid=yes
> hidecallerid=no
> callwaiting=yes
> usecallingpres=yes
> callwaitingcallerid=yes
> threewaycalling=yes
> transfer=yes
> cancallforward=yes
> callreturn=yes
> echocancel=yes
> echocancelwhenbridged=yes
> echotraining=yes
> rxgain=0.0
> txgain=0.0
> group=1
> callgroup=1
> pickupgroup=1
> busydetect=yes
> busycount=8
> dring1=334,146,0
> dring1context=secondnumber
> channel => 1
> 
> I've looked through some of the chan_zap.c code to try and increase
> the wait period, but after making a couple of attempts at fixing it
> decided to leave it alone before I break something :-)
> 
> Another thing I've noticed is that if I *don't* add a dring pattern
> for "0,0,0", when a call comes in, it tries to find the dring pattern
> for 0,0,0, fails to do so, so it tries to go to context ",s,1" (notice
> the missing context name as the first argument), fails to do so and it
> supposedly hangs up the chan, then detects the ringing again (it's
> still the same call, only in its 5th ring by now) and successfully
> detects a pattern different to 0,0,0. This is the only way to have it
> "somewhat" working, although it's pretty unreliable. It's coming up
> with quite a few different patterns, still, I shouldn't have to do it
> this way. A lot of people hang up after the 4th or 5th ring.
> 
> Does anyone have any ideas on this?
> 
> Any suggestions would be greatly appreciated.
> 
> Cheers,
> Gonzalo
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-- 
Howard.
LANNet Computing Associates - Your Linux people <http://lannet.com.au>
-- 
When you just want a system that works, you choose Linux;
When you want a system that works, just, you choose Microsoft.
-- 
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Get rid of the Australian states.