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Article #454

Re: determine phone answered electronically

#454
From: David Lesher
Date: Thu, 15 Aug 1996 00:00
23 lines
1676 bytes
Simon Watkins <simon_watkins@nt.com> writes:

>barrett@opera.iinet.net.au (Barrett Communications) wrote:
>>I am looking for means of determining if a person has picked answered a
>>phone (normal analogue).  

In the US, this is termed "supervision"...

There is no reliable supervision back to the originating
line, with one exception.

In some locales, CPC [a momentary drop in loop current is
offered up on disconnection. But depending on it is a bad idea.

The exception is ISDN. It does provide full supervision.


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From: wb8foz@netcom.com (David Lesher)
Subject: Re: determine phone answered electronically
Date: 1996/08/15
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