Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mstar!mstar.morningstar.com!bob From: bob@MorningStar.Com (Bob Sutterfield) Newsgroups: comp.dcom.modems Subject: Re: CIS & USR DS Message-ID: Date: 11 Jan 91 23:52:09 GMT References: <49@ns.UUCP> <3716.27886916@hayes.uucp> <1991Jan08.171427.29629@nstar.rn.com> Sender: usenet@MorningStar.COM (USENET Administrator) Reply-To: bob@MorningStar.Com (Bob Sutterfield) Distribution: na Organization: Morning Star Technologies Lines: 13 In-Reply-To: larry@nstar.rn.com's message of 8 Jan 91 17:14:27 GMT In article <1991Jan08.171427.29629@nstar.rn.com> larry@nstar.rn.com (Larry Snyder) writes: BTW - what is the speed of the line from the major and minor hub cities back to CIS? Are they using 56KB, T1 or X.25? A minor nit from someone who just spent two weeks documenting an X.25 implementation - X.25 isn't a speed, it's a (family of) protocols at the Link layer of the ISO protocol stack model. It can run over the things that you get from the phone company when you say "56Kb" or it can run over the things that you get when you ask for "T1". It can run over wires that are slower or faster, too, and the Amateur gang runs something derivative that doesn't need wires (AX.25) and calls it Packet Radio. There's even an Ethernet type field value assigned for it (0x0805).