[telecom] Brothers Fax & loop voltage

All CO telecom plant is -48V on hook. But some PBX's, knowing that their loop lengths are usually hundreds of feet, not tens of thousands, opt for less, say -24 to -36V.

This is no problem except in one case: line-in-use detection. Fax machines and Zon-Jr type credit card machines often share a line, and expect that -48V to be there and if it is not; wait, as "the line must be in use by another device..."

The Zon, and other devices I know of, have a configuration setting so if you ARE fed by a

Reply to
David Lesher
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A quick search for "loop extender" on Ebay showed new units available for $30. You'll have to do some research to find out if it will solve the problem, but it's an option.

Bill

Reply to
Bill Horne

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