Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!cs.utexas.edu!uunet!mcvax!kth!draken!tut!santra!chyde!router!hpwrce!howeird
From: howeird@hpwrce.HP.COM (Howard Stateman)
Newsgroups: comp.dcom.modems
Subject: Re: WARNING:  SWB new 'standard' - RJ48S
Message-ID: <7320001@hpwrce.HP.COM>
Date: 15 May 89 17:12:10 GMT
References: <8072@killer.Dallas.TX.US>
Organization: Ye Olde Salt Mines
Lines: 38

> phil@killer.Dallas.TX.US (Phil Meyer) writes:

>The only real difficulty was that Southwestern Bell is pushing to set a 
>new standard for the rest of the world.  They now require their field
>service people to install eight wire (RJ48S I think - more about that later)
>connectors on their leased lines.  They are unwavering in their desire to
>make life as bad as possible for us low lifes who have to deal with this
>stuff.  

RJ45 has >always< been the leased line standard. I've been installing 
MUXes since 1980, and have never seen anything else. I have installed
at Pacific NW Bell, Pacific Bell and in Winnipeg, Canada (whatever telco
they may have) sites. RJ45 is the 8-wire jack, as far as I can tell.

It sounds like SWB has finally decided to adopt the standard.

>1. NOONE makes a RJ48S to RJ11 adapter.  In fact, few people even know
	>what that is.  In fact, they aren't even sure what to call the
	>thing.  I heard 'RJ75', 'RJ45', and someone at MCI said it has
	>to be a RJ48S if it uses 4 wires.

No one makes one because no one needs one. Another part of the standard 
is that the RJ connections are wired from the center of the connector
outward. That is, a 2-wire RJ connection (such as standard domestic 
single-line phones) uses the inside 2 wires. 4-wire connections use
the inside 4 wires. And so on.

Which means if your site only uses 4 of the 8 wires, it will always 
use the same 4 (inside) wires, and you can just plug the sucker
right into the 8-wire jack.

 --------------------------------------------------------------------
|Howard Stateman, Hewlett-Packard Response Center, Mountain View, CA |
|howeird@hpwrce.HP.COM      or     hplabs!hpwrce!howeird             |
|Disclaimer: I couldn't possibly speak for HP. I know too much.      |
|--------------------------------------------------------------------|
|Sysop of the Anatomically Correct BBS (415) 364-3739                |
 --------------------------------------------------------------------