Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: clements@bbn.com
Newsgroups: comp.dcom.telecom
Subject: Re: AT&T System 25 Experience Sought
Message-ID: <4148@accuvax.nwu.edu>
Date: 20 Feb 90 15:40:41 GMT
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X-Telecom-Digest: Volume 10, Issue 117, message 7 of 9

In Telecom-Digest: Volume 10, Issue 107, message 2 of 5,
vances@xenitec.UUCP writes:

>The original posting stated that a requirement was CPC (Calling Party
>Control) on the 2500 (analog single line) ports. [... e.g., to cut off an
>answering machine...]
>Anyone care to comment?
>
>vances@xenitec.on.ca

Just another data point on this.  I commented a while back that
I wanted the same thing on the Panasonic KX-T61610 and that I wanted
a command from a smart-phone to force this action.  Now that the
tech manual has come in, I looked at the circuit for the station
interface and there is no capability to do this in the hardware.
The station is always powered from either the talk-battery generator
or the ring generator, both of which supply DC.  No way to generate
a CPC pulse.  Too bad.  (You can flash the CO lines, but not the inside
stations.)

Bob Clements, K1BC, clements@bbn.com