I know in the x100p hardware the driver can sense whether there is battery voltage on the line or not. Is this possible in the zap drivers using t1/e1 interfaces ? I believe the signalling bits are only ring and hook, not loop presence, so not sure if it is possible. I had a situation last night where a main cable was cut in the area and lines were down overnight. My burglar alarm knew right away there was no line battery and started beeping. Data T1 down was a no-brainer for the monitoring software to detect. Now I am looking for a way to detect loop loss on the voice lines - any ideas how to accomplish with asterisk ? I have a zhone bank - anyone know offhand if I can program loop loss on a port to put it into an alarm state ? At least then I would have a contact closure I could monitor easily.
On Tue, 2003-07-08 at 10:29, Jon Pounder wrote:> I know in the x100p hardware the driver can sense whether there is battery > voltage on the line or not. Is this possible in the zap drivers using t1/e1 > interfaces ? > > I believe the signalling bits are only ring and hook, not loop presence, so > not sure if it is possible. > > I had a situation last night where a main cable was cut in the area and > lines were down overnight. My burglar alarm knew right away there was no > line battery and started beeping. Data T1 down was a no-brainer for the > monitoring software to detect. Now I am looking for a way to detect loop > loss on the voice lines - any ideas how to accomplish with asterisk ? > > I have a zhone bank - anyone know offhand if I can program loop loss on a > port to put it into an alarm state ? At least then I would have a contact > closure I could monitor easily.I don't think the zhones support external notification of alarm other than the LEDs. The CACs do for sure, and therefore it is a good bet the Adtran stuff does as well. I know on my CAC hardware there is an external plug to tie into to put any number of monitors on to detect when it has had a problem. -- Steven Critchfield <critch@basesys.com>
Hi- Its not clear from your msg whether you want to detect the open-circuit condition of the T1/E1 directly or on one of the analog circuits connected on the other side of the channel bank. If directly on the E1/T1, I imagine that asterisk can detect the condition of the "alarm" signals for the circuit - these are separate from the signalling supervision bits like on/off hook. I'm new to asterisk, so don't know how to read those alarm indicators in the software, but the ones you are probably interested in are: "Red Alarm" - means loss of signal (I think a cut line would cause this), "Yellow alarm" - means far end detected an error, and "BPV" - bi-polar violation, means degraded signal (usually). Hope this helps. regards Scott M. Stingel Emerging Voice Technology Inc. Email: scott@evtmedia.com <mailto:scott@evtmedia.com> URL: www.evtmedia.com <http://www.evtmedia.com>> -----Original Message----- > From: asterisk-users-admin@lists.digium.com > [mailto:asterisk-users-admin@lists.digium.com] On Behalf Of > Jon Pounder > Sent: Tuesday, July 08, 2003 4:29 PM > To: asterisk-users@lists.digium.com > Subject: [Asterisk-Users] line battery check > > > I know in the x100p hardware the driver can sense whether > there is battery > voltage on the line or not. Is this possible in the zap > drivers using t1/e1 > interfaces ? > > I believe the signalling bits are only ring and hook, not > loop presence, so > not sure if it is possible. > > I had a situation last night where a main cable was cut in > the area and > lines were down overnight. My burglar alarm knew right away > there was no > line battery and started beeping. Data T1 down was a > no-brainer for the > monitoring software to detect. Now I am looking for a way to > detect loop > loss on the voice lines - any ideas how to accomplish with asterisk ? > > I have a zhone bank - anyone know offhand if I can program > loop loss on a > port to put it into an alarm state ? At least then I would > have a contact > closure I could monitor easily. > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > >
At 05:18 PM 7/8/2003 +0100, you wrote:>Hi- > >Its not clear from your msg whether you want to detect the open-circuit >condition of the T1/E1 directly or on one of the analog circuits connected >on the other side of the channel bank.the t1 circuit is fine and the channel bank did not alarm during the problem (it does have a form c alarm contact) What I am asking is if anyone knows offhand if the alarm state can be triggered on the fxo/fxs ports by reprogramming, or if it only applies to the t1. OR is there any way with rbs to detect a line that lost loop power ? OR is there a way to have asterisk check every few minutes when a line is not in use that it can raise a dialtone ? if not then have some other process get triggered.>If directly on the E1/T1, I imagine that asterisk can detect the condition >of the "alarm" signals for the circuit - these are separate from the >signalling supervision bits like on/off hook. I'm new to asterisk, so don't >know how to read those alarm indicators in the software, but the ones you >are probably interested in are: "Red Alarm" - means loss of signal (I think >a cut line would cause this), "Yellow alarm" - means far end detected an >error, and "BPV" - bi-polar violation, means degraded signal (usually). > >Hope this helps. > >regards > >Scott M. Stingel >Emerging Voice Technology Inc. > >Email: scott@evtmedia.com <mailto:scott@evtmedia.com> >URL: www.evtmedia.com <http://www.evtmedia.com> > > > > > -----Original Message----- > > From: asterisk-users-admin@lists.digium.com > > [mailto:asterisk-users-admin@lists.digium.com] On Behalf Of > > Jon Pounder > > Sent: Tuesday, July 08, 2003 4:29 PM > > To: asterisk-users@lists.digium.com > > Subject: [Asterisk-Users] line battery check > > > > > > I know in the x100p hardware the driver can sense whether > > there is battery > > voltage on the line or not. Is this possible in the zap > > drivers using t1/e1 > > interfaces ? > > > > I believe the signalling bits are only ring and hook, not > > loop presence, so > > not sure if it is possible. > > > > I had a situation last night where a main cable was cut in > > the area and > > lines were down overnight. My burglar alarm knew right away > > there was no > > line battery and started beeping. Data T1 down was a > > no-brainer for the > > monitoring software to detect. Now I am looking for a way to > > detect loop > > loss on the voice lines - any ideas how to accomplish with asterisk ? > > > > I have a zhone bank - anyone know offhand if I can program > > loop loss on a > > port to put it into an alarm state ? At least then I would > > have a contact > > closure I could monitor easily. > > > > _______________________________________________ > > Asterisk-Users mailing list > > Asterisk-Users@lists.digium.com > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users