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- Newsgroups: comp.dcom.isdn
- Path: sparky!uunet!haven.umd.edu!decuac!pa.dec.com!engage.pko.dec.com!nntpd.lkg.dec.com!carafe.enet.dec.com!goldstein
- From: goldstein@carafe.enet.dec.com (Fred R. Goldstein)
- Subject: Re: NT1
- Message-ID: <1993Jan9.035539.13831@nntpd.lkg.dec.com>
- Sender: usenet@nntpd.lkg.dec.com (USENET News System)
- Organization: Digital Equipment Corp., Littleton MA USA
- Date: Sat, 9 Jan 1993 03:54:50 GMT
- Lines: 21
-
-
- In article <C0JsK4.58s@norstan.com>, sfrazier@norstan.com (Steven E Frazier) writes...
- >I thought I understood the ISDN piece, but I don't. Ok if you have
- >a bridge from one of the vendors, then that bridge's RJ45 plugs into
- >a NT1? I thought the RJ45 went directly to a telco RJ45. Can someone
- >elborate on the single pair or is it two paris of wires coming in from
- >the Telco. They wire it to a RJ45? The customer then buys a NT1
- >(which is what? what does it do) and plugs this NT1 into the telco
- >RJ45 and then you can plug in a bridge to the NT1?
-
- Well in my case (I'm typing this over ISDN), Telco brought in a
- jack with an RJ-11 on it. I then run an ordinary RJ11 cable to
- the NT1; in this case, it's an AT&T NT1U-200 with the big power
- supply, and the RJ11 is actually on the power supply. Then the
- TE (at the moment, a Gandalf 5510 bridge) uses an 8-pin RJ45 to the
- NT1. Getting the cables straight for all of the TAs and NTs (the
- AT&T "NT1U" AMI and 2B1Qs are wired differently) is not trivial.
- ---
- Fred R. Goldstein goldstein@carafe.tay2.dec.com
- k1io or goldstein@delni.enet.dec.com voice:+1 508 952 3274
- Standard Disclaimer: Opinions are mine alone; sharing requires permission.
-