Summary: | ASTERISK-01874: tdm fxo senses pstn line disturbances as ringing | ||
Reporter: | radamson (radamson) | Labels: | |
Date Opened: | 2004-06-23 10:40:19 | Date Closed: | 2008-06-07 10:42:44 |
Priority: | Minor | Regression? | No |
Status: | Closed/Complete | Components: | Core/General |
Versions: | Frequency of Occurrence | ||
Related Issues: | |||
Environment: | Attachments: | ||
Description: | any disturbance on pstn line is interpreted as ringing, and * processes that via associated dialplan entries. Sip phone will ring twice, callerid always "asterisk", and then hangs up without anyone touching anything. No other calls in progress within *. Happens on all 4 fxo modules. ****** ADDITIONAL INFORMATION ****** Can be reproduced about 50% of the time by simply bridging an analog phone on the pstn line, lifting the receiver and replacing it. Also, if the analog phone actually conducted a lengthy phone conversation, the hang up of the analog phone will cause the same. In rare cases, loud speech on a bridged analog phone will cause * to believe the pstn line is ringing. RHv9 CVS-HEAD-06/17/04 zapata.conf key entries: signalling=fxs_ks echotraining=yes usecallerid=yes hidecallerid=no callwaitingcallerid=no echocancel=yes echocancelwhenbridged=yes immediate=no callprogress=no ; rxgain=0.0 ; txgain=-0.0 In wcfxs.c, changing: if (wc->mod.fxo.ringdebounce[card] >= ZT_CHUNKSIZE * 32) lines from "32" to "64" seems to correct the issue, however I'm not a programmer. Others on the asterisk-user list have discussed this same problem. Changing rxgain/txgain does not seem to impact the problem without seriously impacting the ability to use the pstn line (nor does commenting them out as shown above). | ||
Comments: | By: Mark Spencer (markster) 2004-06-23 14:05:15 64 is still a very reasonable ringer debounce. I've updated it in CVS. By: Digium Subversion (svnbot) 2008-06-07 10:42:44 Repository: dahdi Revision: 419 U trunk/wcfxs.c U trunk/wctdm.c ------------------------------------------------------------------------ r419 | markster | 2008-06-07 10:42:43 -0500 (Sat, 07 Jun 2008) | 2 lines Increase ring debounce (bug ASTERISK-1874) ------------------------------------------------------------------------ http://svn.digium.com/view/dahdi?view=rev&revision=419 |