Actually, if it's only a CID box (NO RINGER IN THE
BOX!), you should be able to hang them out there to
your hearts content. The ringer equalivance is listed
as 0.0. The typical CID chip input is 2 x 100 Kohm
resistors in series with 2 x 220 pf capacitors, which
is a VERY LOW loading.
For comparision, a standard ringer is 4.7 Kohm and a
hugh .47 mfd capacitor, this is a 1.0 ringer
equalivance.
Again, keep those ringers off the 171 port and only
use CID boxes.
Another note- don't use a PC modem card that has CID
feature. Most cards we tested have a nasty way of
doing CID. They detect the ring voltage, then trip
the connect relay, with the dial pulse circuit open,
to "hear" the CID tones which the modem chip reads as
a standard fsk data stream. You end up with the
ringer equiv. PLUS the network termination circuit!
This is an added 2.0 mfd cap in series with 200-700
OHM resistance. To drive a few of these turkeys, you
need to look for a 10 watt amplifier to feed the phone
line;-) This little switching action adds nasty DC
shifts to the poor phone line that can make a
perfectly good CID box miss the CID tone burst.
Hope that helps you plan your install.
-larry
--- Randy Dell <[EMAIL PROTECTED]> wrote:
> it works, I have done it. You may have a problem
> with 10 CID though, I put
> on 5 with no problem.
>
> rd
>
> -----Original Message-----
> From: Steven Natinsky <[EMAIL PROTECTED]>
> To: KXT List <[EMAIL PROTECTED]>
> Date: Friday, September 21, 2001 10:25 AM
> Subject: KX-T: CID
>
>
> I have a client who has 10 non-display phones who
> wants caller ID at each
> desk and doesn't want to upgrade to display phones.
> How about using a
> KXTD171 module and running the caller ID output from
> the one caller ID slt
> port to 10 cheap
> caller ID units. Has anybody tried this? Is there
> any reason this would not
> work? TIA-
>
> Regards,
> Steve Natinsky
> Pace Comm, Inc.
> [EMAIL PROTECTED]
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