Dave VanHorn wrote:
>>
>> >D.C. Line Voltage (Talk Battery) - 48v with receiver on-hook, red wire
>> >(ring) negative, 5v for off-hook (with 50-1000 ohm d.c. load on line).
>
>That off-hook number is pure imagination. You can get anything from
>near-zero to ???
>I've seen 6V to 18V across off-hook equipment. Mostly, it depends on the DC
>resistance of the telco line (an unknowable for you) and the instrument
>(another unknowable, unless it's your design)
>
>--

These should probably all be checked, if James is gonna cast them
on techref, but I seem to recall 48v was supposed to be the nominal
voltage applied at the telco end - miles of wire away.

- danM

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