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- Path: sparky!uunet!sun-barr!cs.utexas.edu!torn!cunews!revcan!software.mitel.com!grayt
- From: grayt@Software.Mitel.COM (Tom Gray)
- Newsgroups: comp.dcom.cell-relay
- Subject: Re: Curious attitude ...
- Message-ID: <12464@janice>
- Date: 30 Jul 92 19:01:13 GMT
- References: <22064@venera.isi.edu> <12430@janice> <1992Jul30.074342.5506@dxcern.cern.ch>
- Organization: Mitel. Kanata (Ontario). Canada.
- Lines: 45
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- In article <1992Jul30.074342.5506@dxcern.cern.ch> brian@dxcern.cern.ch (Brian Carpenter CERN-CN) writes:
- >In <12430@janice> grayt@Software.Mitel.COM (Tom Gray) writes:
- >
- >
- >>Video will not dominate network traffic. Voice traffic is an
- >>order of magnitude greater than all other services combined.
- >>Therefore voice considerations will dominate the design of
- >>networks for the forseeable future. This was reported in
- >>IEEE Network for May or June of 1990.
- >
- >The _total_ voice market is constrained by the total number of people
- >in the world rich enough to have a telephone and the amount of time they
- >want to talk. This means that the voice market has a future growth
- >potential of only about one order of magnitude. The future growth
- >potential for image and data transfer is unknowably high. Given that
- >carriers invest for 20 or 30 year payback they would be very foolish
- >to base plans on the current market share for voice. Indeed,
- >nobody would be even _thinking_ about fiber to the home if this
- >point was not understood.
-
- This point was understood by the authour of the article in question.
- Data traffic will be limited by the ability of the individual user
- to type and read. How long will it take to read a file of
- two million characters? How much voice traffic will be carried
- in the same time at 32kb/s (or 16 or 8 but it is still the
- same order of magnitude).
-
- The only service which is capable of matching voice traffic
- in terms of bits/second is switched video on demand or
- switched entertainment. Fibre to the home is (I agree)
- dependant on this service. However fibre to the curb
- or fibre in the network is not.
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- .
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- --
- i.sinature
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