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- Newsgroups: comp.protocols.tcp-ip
- Path: sparky!uunet!news.uiowa.edu!iworks.ecn.uiowa.edu!jhfreeman
- From: jhfreeman@iworks.ecn.uiowa.edu (James H Freeman)
- Subject: 10base-T Networking, How can I tell if existing wiring works?
- Sender: news@news.uiowa.edu (News)
- Message-ID: <1992Sep7.215540.19206@news.uiowa.edu>
- Date: Mon, 7 Sep 1992 21:55:40 GMT
- Nntp-Posting-Host: iworks.ecn.uiowa.edu
- Organization: International HP Workstation users' group (InterWorks)
- Lines: 41
-
- We are planning on converting a lab from serial connections to 10baseT.
- Instead of replacing the wire, we would like to try to use the existing wire.
- It was installed 3 years ago, but I do not know how twisted it is. The
- building is going to be remodeled in 1 year, so we want to limits costs.
-
- It is a small project: 8 connections that run on 2 pair wire, put RJ45's
- on each end & connect to hub. Each run is ~50 meters, we just got a
- Microtest pair scanner to help with the testing.
-
- What things will I have to look out for & what tips does the gurus on
- the net have on installation?
-
- Hints I have heard of & are planning to implement:
- Replace 66 blocks with 110 or Krone.
- Twist the ends of the wires all the way to the blocks.
- Use RJ45's
-
-
- Lastly, Is this the correct pinout for 2 pair 10base-T on both ends?
-
- Diagram of RJ45 socket
- > 1 8
- > +----------+ Pin Function
- > | |||||||| | 1 Transmit data +
- > | |||||||| | 2 Transmit data -
- > | | 3 Receive data +
- > +-+ +-+ 6 Receive data -
- > +-+ +-+
- > +--+ (Taken from the AT&T AUI adapter installation manual)
-
-
- Thanks in advance.
- Bruce Cantrall
-
- PS. My IEEE spec book on 10baseT is coming in the mail soon. This may answer
- some of the questions.
-
- ------\ Bruce Cantrall, Vax & Apollo System Manager
- ------/ Cornell College Academic Computing
- Mail 600 First St, Mount Vernon, IA 52314 U.S.A.
- Telephone 319.895.4414 Internet: Bruce@Cornell-Iowa.edu
-