Re: Help ! - data comunication

["Tien Dang Nguyen" <Tien.Dang.Nguyen@MCI.Com>]

* Lease line: companies try to get away of it. It is not a data network and
will become very expensive on the run.
* X.25: too old technology. It has a lot of overhead flow control packets
that are not necessary for digital transmission equipment. There are
no more major development on this technology.
* Frame Relay: It's hot now and it will become more mature soon. Implementing
the FR network now, you would put yourself in good position for the
next 20 years for bandwidth demanding.   
I do not know about Ascom and Net. I do test Newbridge 36170 series
(not FR card but ATM card). USA local Bells use their FR a lot.
- Banwidth range for users: DS0,DS1,DS3,OC3
- Banwidth range for trunks: DS1,DS3,OC3,OC12, and OC48 (end 1998)
- easy to migrate FR to ATM
-etc
Tien   


Date: Wed, 6 Aug 1997 03:44:00 -0500 (CDT)
From: PHAM-ANH.QUAN/OU=CITH3@nsfhh9.ansf.alcatel.fr
To: Multiple recipients of list <vnsa-l@csd.uwm.edu>
Subject: Help ! - data comunication 

Mi`nh ddang pha?i thie^'t ke^' ma.ng truye^`n so^' lie^.u co' ye^u ca^u
su+?
 du.ng cho ba da.ng sau : lease line, frame delay va` X25 theo ca'c ba.n
thi` thie^'t bi. cu?a ha~ng na`o la` to^'t nha^'t ?

Hie^.n ta.i co' 3 nha`tha^`u go^`m : ASCOM, NEWBRIDGE va` NET mi`nh
kho^ng ro~ ha~ng na`o chie^'m thi. pha^`n tre^n the^' nhie^`u ?

Co' ai co' tho^ng tin gi` thi` cho bie^'t nhe' .