Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!rutgers!sri-spam!ames!ucbcad!ucbvax!STL-HOST1.ARPA!SNELSON From: SNELSON@STL-HOST1.ARPA.UUCP Newsgroups: comp.dcom.telecom Subject: ISDN Message-ID:Date: Mon, 23-Nov-87 08:57:00 EST Article-I.D.: SIMTEL20.KPETERSEN.12352918475.BABYL Posted: Mon Nov 23 08:57:00 1987 Date-Received: Sun, 6-Dec-87 21:54:27 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 16 Approved: telecom@xx.lcs.mit.edu I WOULD LIKE TO START SOME DIALOG ON ISDN. MY FIRST PARTICULAR HANG UP IS WITH THE WIRING SCHEME. 6 OF THE 8 CONDUCTORS TO AN RJ45 TYPE JACK ARE ASSIGNED (B+D). I WOULD LIKE TO SEE THE UNASSIGNED ASSIGNED AS POWER -12V TO +12V TO POWER EQUIPMENT. TO MANY OF THE NEW NETWORKING SCHEMES REQUIRE POWER OUTLETS TO MATCH COMM EQUIPMENT HANGING ON THE END OF THE WIRE. ANOTHER THING I THINK SHOULD BE LOOKED AT IN MORE DETAIL IS POWER AND ESPECIALLY GROUNDING. FIPS 94 IS POSSIBLY THE BEST DOCUMENT WRITTEN TO DATE ON THIS SUBJECT AND A LOT OF THINGS I SEE BEING TALKED ABOUT SEEM TO BE RELATED TO NOISE DUE TO IMPROPER GROUNDING TECHNIQUES, ESPECIALLY IN DIGITAL SWITCHING, BUT I HESITATE TO START THROWING STONES ABOUT THIS SINCE I WOULD NOT HAVE THE VAGUEST IDEA OF HOW SOMEONES PLANT WAS WIRED. REGARDS, STEVE