🚀 go-pugleaf

In article <1989Dec9.220311.15928@phri.nyu.edu>, roy@phri.nyu.edu (Roy Smith) writes:
>> If you are going to design a commercial product, then you are in trouble
>> because Part 68 will not allow ANY usable amount of leakage from tip to ring
> 
> 	Is this a new rule?  Universal Data Systems (now part of Motorola,
> I think) used to make a nice little 1200 bps modem called the 212LP, where

	Perhaps I did not make myself clear.  I was referring to "leakage",
which means the amount of current flow in an ON-hook (i.e., telephone line
idle) state.  In an OFF-hook state, one can draw as much current as the
subscriber loop will allow, typically between 20 and 100 mA.

	It appears that the orignal poster was referring to designing a
telemetering device for data acquisition which would require power on a
*continuous* basis, and therefore would draw power from the telephone line
while it was ON-hook.

<> Larry Lippman @ Recognition Research Corp. - Uniquex Corp. - Viatran Corp.
<> UUCP  {allegra|boulder|decvax|rutgers|watmath}!sunybcs!kitty!larry
<> TEL 716/688-1231 | 716/773-1700  {hplabs|utzoo|uunet}!/      \uniquex!larry
<> FAX 716/741-9635 | 716/773-2488      "Have you hugged your cat today?"