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- Path: sparky!uunet!usc!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: <12409@pinard>
- Date: 28 Jul 92 12:16:45 GMT
- References: <12387@pinard> <22041@venera.isi.edu>
- Organization: Mitel. Kanata (Ontario). Canada.
- Lines: 50
-
- In article <22041@venera.isi.edu> finn@dalek.isi.edu (Greg Finn) writes:
- >
- >In article <12387@pinard> grayt@Software.Mitel.COM (Tom Gray) writes:
- >
- >>Voice and video service will be the bulk of the traffic
- >>on the networks of the future. They have specific requirements
- >>which have prevented current data networks from carrying them
- >>in any practical situation. Has anyone ever made a voice call
- """"""""""""
- >>using TCP/IP?. These requirements will not change and so
- >>the network standards of tomorrow must adapt to them.
- >
- > The live audio multicast of the IETF meeting last week was
- >carried to at least 100 if not 200 sites and a few continents. Oddly
- >enough, this was done using TCP/IP. It was also accompanied by
- >live compressed video. I leave it to you, how long ago do you think
- >researchers were experimenting with live speech over the Internet?
- >
-
- You have described a very small conference system. I have seen descriptions
- of voice switches made over Ethernet, FDDI and probably every other
- network system. What these systems cannot provide is the combination
- of the required delay and bandwidth (and at a cost competitive with
- other technologies). There is no doubt that anyone can switch voice
- information through a data network. If you provide enough bandwidth
- to lower the delay, if you provide enough buffers to overcome the
- delay jitter, you can do anything.
-
- However if you are attempting to provide service comparable to the
- existing voice network and extend these services to include
- associated video and data service, you will have to come up with a
- system comparable to ATM.
-
- Now can you demonstrate a 2000 line PBX with integrated ACD
- operating over TCP/IP?
-
-
- As others have pointed out, ATM/B-ISDN has been designed to work in
- a multi-service environment.
-
- >
- >
- >
- >--
- >Gregory Finn (310) 822-1511
- >Information Sciences Institute, Marina Del Rey, CA 90292
-
-
- --
- i.sinature
-