On Fri, Apr 11, 2008 at 11:43:19PM -0300, Marlon Dutra wrote: > If I put an DSL filter in series with the line and the card, IT WORKS > PERFECTLY!!! The filter imposes 25 ohms over the circuit. Maybe that's > causing the card to work. When I put the filter and the ammeter in > series, I get zero amper when on-hook and 26 mA when off-hook, that's > the expected behaviour.
It's possible the 'line relay' on that card is not a physical relay, but electronic, and that its sensitive to too much loop current -- and the DSL filter drops the current far enough for that 'relay' not to pull in spuriously. Telecom guy Mike Sandman has a paper on loop current on his website: http://sandman.com/loopcur.html and, come to that, lots of *really* cool stuff for sale as well; if you've never looked at his site, do. Cheers, -- jra -- Jay R. Ashworth Baylink [EMAIL PROTECTED] Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com '87 e24 St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274 Those who cast the vote decide nothing. Those who count the vote decide everything. -- (Joseph Stalin) _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users