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From: csense!bote@uunet.uu.net (John Boteler)
Newsgroups: comp.dcom.telecom
Subject: Re: Answer Supervision on a POTS Line (Kind of)
Message-ID: <9943@accuvax.nwu.edu>
Date: 20 Jul 90 03:18:44 GMT
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 From article <9782@accuvax.nwu.edu>, by forrette@sim.berkeley.edu
(Steve Forrette):

> If you have three-way calling, you can determine when the call
> supervises.  This is a result of a flash not breaking to a second dial
> tone until the call supervises...At least this is what happens on the
> 1AESS I'm on.  
> A couple of questions for you experts:  Does this only happen on a 1AESS?  
> Which other switches?

As you succinctly pointed out, this is what happens on your 1A, but
not on mine. Don't ask about #5s around here.

I rather fancy this, as a matter of fact; each switch has its own
personality :) Too bad for us when we build circuits and install
equipment depending on predictable behavior.

Postscript: On 1A Centrex around here (D.C.), answer supervision was
provided in the form of loop-interrupt. If you really, really needed
to have this information provided you, just order Centrex (and hope
they get the features right!)


John Boteler                         {uunet | ka3ovk}!media!csense!bote
NCN NudesLine: 703-241-BARE  --  VOICE only, Touch-Tone (TM) accessible