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Path: utzoo!mnetor!seismo!lll-lcc!ptsfa!amdahl!amdcad!phil
From: phil@amdcad.UUCP (Phil Ngai)
Newsgroups: comp.sys.misc
Subject: Re: Pending FCC ruling threat to modem users
Message-ID: <14178@amdcad.UUCP>
Date: Tue, 23-Dec-86 22:41:31 EST
Article-I.D.: amdcad.14178
Posted: Tue Dec 23 22:41:31 1986
Date-Received: Wed, 24-Dec-86 05:39:24 EST
References: <1575@brl-adm.ARPA> <126@dvm.UUCP> <4334@mit-eddie.MIT.EDU> <886@epiwrl.UUCP> <4815@amdahl.UUCP>
Reply-To: phil@amdcad.UUCP (Phil Ngai)
Organization: Advanced Micro Devices, Sunnyvale, California
Lines: 31
Keywords: TASI

In article <4815@amdahl.UUCP> sjl@amdahl.UUCP (Steve Langdon) writes:
>  The standard acronym associated with
>this technique is TASI (Time Assigned Speech Interpolation?).  It was
>originally developed for use on high cost routes such as trans-Atlantic
>cables (not satellites).  Given the cost of the equipment involved use
>is still restricted to this type of application.

Steve, would you care to comment on whether the availability of TAT-8
(a fiber optic trans-Atlantic cable) will affect the use of TASI? Will
the new cable reduce the cost of bandwidth enough to make the use of
TASI equipment uneconomical?

I smell a "data calls cost the phone company more" debate here.  All
the situations I've seen involved Regional Bell Operating Companies
trying to eliminate unlimited local calls. For local calls,
particularly at night, which is when most users are home and on their
modem, there really is no additional cost to the RBOC. All that is
used is their local loop, which exists and is economically
non-sharable, and a piece of the switch, which has to be designed for
daytime peaks anyway.

I don't think there are any long distance carriers who care, at least,
that I have heard of. And that is where things like echo suppression
and TASI come into play.

-- 
 If you had everything, where would you put it?

 Phil Ngai +1 408 749 5720
 UUCP: {ucbvax,decwrl,hplabs,allegra}!amdcad!phil
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