[asterisk-bugs] [Asterisk 0018005]: chan_dahdi does not detect polarity change when using AEX800P/wctdm24xxp

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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https://issues.asterisk.org/view.php?id=18005 
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Reported By:                pruiz
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18005
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.2.11 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-09-16 19:54 CDT
Last Modified:              2010-09-16 19:54 CDT
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Summary:                    chan_dahdi does not detect polarity change when
using AEX800P/wctdm24xxp
Description: 
My POTS telco (Telefonica/Spain) uses polarity switch for answer and hangup
signalling, and as such I've been using TDM4XXP cards with
hanguponpolarityswitch/answeronpolarityswitch=yes for years without problem
on asterisk 1.4.x..

However, a couple of weeka ago we bougth a new AEX800P with 6 FXO ports,
and I've been unable to make it work as it seem to completely ignore
polarity changes.

I've tried with different combinations of options at chan_dahdi, and with
different wctdm24xxp module options w/o any success..

Also, setting debug and verbose to 99, and loading wctdm24xxp with
debug=1, the only log relating to polarity which I from dmesg or asterisk
full logs,  get during a call are:

chan_dahdi.c: Ignore possible polarity reversal on line seizure
chan_dahdi.c: Setting IDLE polarity due to ring. Old polarity was 0


Here is chan_dadi.conf:

[channels]
context=from-pstn
signalling=fxs_ks
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=no
canpark=no
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=256
rxgain=5.0
txgain=5.0
relaxdtmf=yes
callgroup=1
pickupgroup=1
hardwaredtmf=yes
;mwimonitor=fsk
;waitfordialtone=15000
adsi=yes
sendcalleridafter=2
cidsignalling=bell
cidstart=ring
language=es
polarityevents=yes
answeronpolarityswitch=yes
hanguponpolarityswitch=yes
polarityswitchondelay=1
faxdetect=both
;faxdetect=no
;callprogress=no
;usedistinctiveringdetection=yes
tonezone=6      ; 6 == Spain

group=0
channel => 1-6
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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-09-16 19:54 pruiz          New Issue                                    
2010-09-16 19:54 pruiz          Asterisk Version          => 1.6.2.11        
2010-09-16 19:54 pruiz          Regression                => No              
2010-09-16 19:54 pruiz          SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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