Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think!ames!pasteur!ucbvax!rvax.ccit.arizona.edu!WIMMER%telcom
From: WIMMER%telcom@rvax.ccit.arizona.edu
Newsgroups: comp.protocols.tcp-ip
Subject: RE: Network Wiring Scheme
Message-ID: <8912150445.AA04122@ucbvax.Berkeley.EDU>
Date: 14 Dec 89 17:21:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 37


Ken,

Until the IEEE 10baseT specifications are published next year there really is 
no standard for ethernet over twisted pair.  Many vendors seem to have defined 
what they think the proposed standard will be and are at least announcing 
products to support it.  Most vendors are producing products to work on UTP
(unshielded Twisted Pair) for ethernet and even big blue has it's type 3 media
filters to allow Token Ring to work on UTP.  

Our campus has chosen to use the AT&T PDS wire plan and we are about to complete
 the rewiring of most buildings on campus to conform to PDS specs.  We install
dual RJ-45 (106bfd) jacks for voice and data use in every office.  (there are
suggestions for the quantity of these dual V/D jacks needed for every size room)
 At this point the voice jack (4 pr UTP) will be used only to connect to the new
5ESS switch (which will cutover in Feb90) and the middle 4 pins of the RJ-45 
data jack is used/reserved for the campus low speed data switch (IDX-3000's).
Our telecomm engineering group has/does authorize the use of the unused two pair
of the data jack for such things as printer sharing device connections,
 workgroup & departmental LAN's and in some cases we have used them to supply
video to an overflow room next to an instructional seminar or lecture.  We have
started to test different vendors UTP ethernet products but as yet have not 
made a decision as to which one to support.  Many of the Research Labs and 
departments have chosen to install departmental/building thick coax with AUI
bulkhead mounts off xceiver taps instead of attempting to "beta test" the as
yet unpublished 10baseT standard for UTP Ethernet.

We have tested or have currently installed on UTP the following LANs;

Arcnet UTP hubs and PC cards using LANtastic's Software
Arcnet UTP Hubs & PC cards using Novell Software
Arcnet UTP Hubs & PC cards using Arcnet Software
Cabletron UTP Ethernet concentrator & UTP transceivers
Synoptics UTP Ethernet concentrators & UTP transceivers
IBM Token Ring MAU's and IBM Token Ring PC cards using Novell software
	The MAU's between floors are connected using IBM type 1 cable
AT&T StarLAN using AT&T Hubs, PC cards, & software