On 11/19/06 11:47 PM, in article , "jasen"
wrote:

On 2006-11-19, Eeyore wrote:


bz wrote:

Joerg wrote in news:6207h.6722
:

Its hard to peg characteristics. Would a modem be considered a 200 ohm
nominal load on the phone line?


IIRC, phone lines are a nominal 600 ohm impedence.

Isn't the bell circuit about 2k ?

near infinite DC resistance,

In the U.S. And Canada the DC resistance must not be lower than 5 MegOhms.
That is with 5 phones connected, with each having a Ringer Equivalence of
one (total REN=5). You can have more phones connected, but the total REN
must not be greater than 5.


2k AC resistance sounds about right given
that you're allowed to parallel three of them.

See above. Where did the quantity 3 come from?

Don