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From: ken@nsc.nsc.com (Ken Trant)
Newsgroups: sci.electronics,sci.med
Subject: Re: Injury via Phone
Message-ID: <4585@nsc.nsc.com>
Date: Fri, 21-Aug-87 12:46:10 EDT
Article-I.D.: nsc.4585
Posted: Fri Aug 21 12:46:10 1987
Date-Received: Sun, 23-Aug-87 05:12:25 EDT
References: <414@gtx.com>
Organization: National Semiconductor, Sunnyvale
Lines: 16
Xref: mnetor sci.electronics:1194 sci.med:2974

in article <414@gtx.com>, al@gtx.com (0732) says:
> One often hears about people blowing whistles or air horns into a
> telephone to thwart obscene callers. Is a telephone capable of
> transmitting enough sound amplitude to cause pain or damage to the ears?
> If so, this seems to be a dangerous capability in the hands of
> some crank.
 Yes it can, I once worked for PacBel and there were several people
(operators, 411) who received permanent hearing loss while working.
 The headsets (and phone system) could and did transmit a db noise
level that would cause this to happen.

-- 
                                    Ken Trant,
                                    Real Estate Professionals
                                    415-651-3131
                                    408-721-8158