Alarm system not taking incoming call (ring issue?)

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Thomasvs:
The Obihai support could not help me either. It seems that the issue may be the ring voltage.
Standard phones use 90V, the max for the Obi is 82V (Not sure why they would do that).
The only suggestion I got was to acquire a "Ring Voltage Booster".
The only one I can find is quite costly compared with the cost of the Obi device.
Any suggestions anyone?

MikeHObi:
Quote from: Thomasvs on February 18, 2014, 10:55:09 am

Standard phones use 90V, the max for the Obi is 82V (Not sure why they would do that).


Standard in what country?  Nominal is 90V but U.S. standard requires ring detect at minimum voltage of 40V.  If the Obi is putting out 82V that should be plenty for ring detect on devices meeting US standards.  My guess is that your alarm system board may have  degraded component which is causing it to require out of spec values.

Max voltage per the U.S. standards is 180V

If you feel that you need more voltage, there is a company that sells a ring voltage booster.  It's not cheap, but it will boost ring voltage to 90v.
http://www.sandman.com/longloop.html

Thomasvs:
Found a relatively inexpensive (around $20) work around solution for my ring detection issue.

I purchase an "EasyJack2" electric outlet phone line extension. I just placed the EasyJack base unit and the extension unit side by side on an electric extension bar. I connected the OBi to the base unit and the Alarm to the extension unit.

The alarm system now detects the ring signal generated by the EasyJack.

Of course I would prefer if the Obi's ring signal (voltage) could be configured to work with the alarm system in the first place.

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