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- Path: sparky!uunet!cs.utexas.edu!uwm.edu!lll-winken!telecom-request
- From: martin@datacomm.ucc.okstate.edu
- Newsgroups: comp.dcom.telecom
- Subject: Re: Apartment Security Stupidity
- Message-ID: <telecom13.37.10@eecs.nwu.edu>
- Date: 21 Jan 93 15:47:19 GMT
- Sender: Telecom@eecs.nwu.edu
- Organization: TELECOM Digest
- Lines: 42
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 13, Issue 37, Message 10 of 15
-
- > 'in-use' light on the phone would be honored by most courteous people
- > who saw it illuminated for a few seconds when they arrived. PAT]
-
- That is, if they can see the light. The growing use of purely visual
- indicators on publicly accessible telephone equipment is a real
- scourge. I cringe every time I hear somebody singing the praises of
- some new payphone or other communications device containing a
- graphical screen or other visual indicator. That is just something
- else that will have to be fixed, at some time, or that will give grief
- or maybe even cause a dangerous situation for either a blind person or
- somebody else whose call gets stepped on because some blind person
- didn't get enough information about the system to use it properly.
-
- There have been light detectors for use with LED's and other types of
- signal lamps , for over 30 years. These things are easy to build and
- quite cheap. They have made most office phone systems accessible.
- The problem is that most blind people don't carry a light probe around
- with them. If they did, and came upon this signalling system for the
- first time, they would probably have been given instructions from the
- person they were visiting telling them how to use the phone but
- omitting the part about the in-use lamp since most people just don't
- think about things like that.
-
- A better solution for the hypothetical situation would be to have
- exclusionary switching on each phone so that if the line voltage is
- low, that phone can't be picked up. I believe that is how the devices
- work that prevent extension phones from being picked up when one is
- already in use.
-
- As for the big non-hypothetical problem, there is no easy answer, but
- we, as technical people, need to give it the college try. There will
- be more and more people with different handicaps in the work force.
- Solutions which fix one or two telephones, here or there, just won't
- solve the problem. The best solution will be to make sure that
- telecommunication facilities are as accessible to as many people as
- possible. A good title for a thread on this subject would be, "Why do
- you Have to See to Hear?"
-
-
- Martin McCormick WB5AGZ Stillwater, OK
- O.S.U. Computer Center Data Communications Group
-