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- From: seifert@netcom.com (Rich Seifert)
- Subject: Re: Adapter to use all 4 pairs in 10BaseT
- Message-ID: <1992Dec31.012939.6354@netcom.com>
- Organization: Networks & Communications Consulting
- References: <brunetti-301292145224@spanky.dcrt.nih.gov>
- Date: Thu, 31 Dec 1992 01:29:39 GMT
- Lines: 23
-
- In article <brunetti-301292145224@spanky.dcrt.nih.gov>, brunetti@alw.nih.gov (Jim Brunetti) writes:
- > Does anyone know of a company who sells an adpater to split out the 4 pairs
- > of a standard 10BaseT run so all 4 pairs can be utilized? We have a case
- > where the wiring has already been run and terminated and someone needs one
- > more drop in a lab. The room has been sealed and the conduits are filled.
- > There is an RJ-45 outlet box in the lab and the wire is terminated in a
- > RJ45 patch panel. Any help or suggestions would be appreciated.
-
- All you really need is a "T" connector for the RJ-45, and some special
- cables to use the other two pairs in the cable. There is no electrical
- problem (interference, etc.) between two 10BaseT signals in the same cable
- like this, so it is just a matter of pinout. Just be careful to use
- these "special cables" (wired to bring a standard 10BaseT NIC to use
- pins 4/5 and 7/8 as the pairs) only where you have this situation.
- You will have to make the equivalent adapter at the wiring closet end
- as well.
-
-
- --
- Rich Seifert Networks and Communications Consulting
- seifert@netcom.com (408) 996-0922
- (408) 996-2860 FAX
- "... specialists in Local Area Networks and Data Communications systems"
-