[asterisk-dev] Problem with phantom rings....

[Steve Totaro]

There are two times that I have encountered this issue.  Once was a bad TDM400P motherboard.  I figured it must be the FXO daughter board but after replacing it, the same behavior continued.  Anyways, that particular port was total static all the time, I confirmed by moving all the daughter cards and actual phone lines but the problem remained on Zap/1.

The second time I saw this behavior was when a splitter was placed before the PBX for outbound faxing.  Asterisk would hear noise on the line and answer the call.  It took me a few minutes to put the two together, someone sends a fax and all the extensions start ringing with fax tone ;-)

Thanks,
Steve Totaro
http://www.asteriskhelpdesk.com
KB3OPB
 

> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com [mailto:asterisk-dev-
> bounces at lists.digium.com] On Behalf Of Marius Stankevicius
> Sent: Wednesday, March 28, 2007 2:56 AM
> To: 'Asterisk Developers Mailing List'
> Subject: RE: [asterisk-dev] Problem with phantom rings....
> 
> 
> 
> No nise in the line during calls, but there are random spikes of noize
> when
> phone is on-hook. It does not happen right after you hang up the call...
> When there is incoming call the level of Rx is constant and in case of
> noise
> Rx rises relatively slowly almost to the level of ringing and then goes
> out,
> but TDM400p card registers it as an incoming ring and does not check if it
> rings further. I think asterisk should hang up the call when it registers
> dialtone in the line instead of ringing...
> 
> Ofcourse that is only my idea, I'm not so good at programming as to
> rewrite
> the driver module
> 
> And sorry for my english :)
> 
> Marius Stankevičius
> UAB "Viginta"
> IT technikas
> 
> 
> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com
> [mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of Steve Totaro
> Sent: Tuesday, March 27, 2007 3:49 PM
> To: Asterisk Developers Mailing List
> Subject: RE: [asterisk-dev] Problem with phantom rings....
> 
> Even though this was not really a dev question, a golden nugget was
> revealed
> so I added it to the Wiki
> http://www.voip-info.org/wiki/view/Asterisk+cmd+WaitForRing .
> 
> I had his issue once a long time ago and never found a solution except to
> have the telco tech fix it.
> 
> Question, is there noise on the line during calls?  Is this a complete
> workaround for the issue or do you still need to have the line looked at?
> 
> Thanks,
> Steve Totaro
> http://www.asteriskhelpdesk.com
> KB3OPB
> 
> 
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