Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!sun-barr!apple!hercules!hercules.csl.sri.com!hampton From: hampton@dustbin.cisco.com (David Hampton) Newsgroups: comp.protocols.tcp-ip Subject: Re: Tranceiver cable wiring Message-ID: Date: 13 Sep 89 02:59:30 GMT References: <8909100707.AA05659@ucbvax.Berkeley.EDU> Sender: usenet@csl.sri.com Organization: cisco Systems, Inc. Lines: 34 In-reply-to: RUBIN@GRAF.POLY.EDU's message of 8 Sep 89 20:00:46 GMT From the Cabletron ST-500 booklet: 1 Logic Ref 2 Collision + 9 Collision - 3 Transmit + 10 Transmit - 4 Logic Ref 11 Logic Ref 5 Receive + 12 Receive - 6 Power Return 13 Power 7 N/C 14 Logic Ref 8 Logic Ref 15 N/C The 20-guage wire is most likely for pins 6 and 13. The 22-guage pairs would then go to 2 & 9, 3 & 10, and 5 & 12. BTW, Ethernet V2.0 and IEEE 802.3 specs call for four pair of 20-guage wire. David +-------------------------------------------------------+ | David R. Hampton \ email: hampton@cisco.com | | cisco Systems, Inc. \ | | 1350 Willow Road \ | | Menlo Park, CA 94025 \ Phone: (415) 326-1941 | +-------------------------------------------------------+ -- David +-------------------------------------------------------+ | David R. Hampton \ email: hampton@cisco.com | | cisco Systems, Inc. \ | | 1350 Willow Road \ | | Menlo Park, CA 94025 \ Phone: (415) 326-1941 | +-------------------------------------------------------+