Path: utzoo!utgpu!watmath!clyde!ima!spdcc!dyer From: dyer@spdcc.COM (Steve Dyer) Newsgroups: comp.dcom.modems Subject: Re: ARK LDM-4 Message-ID: <2232@spdcc.COM> Date: 8 Dec 88 16:55:45 GMT References: <8811301805050FA.GUWI@RAI.CC.FSU.EDU> <8157@megaron.arizona.edu> <11@dsinc.UUCP> <3633@mtuxo.att.com> Reply-To: dyer@spdcc.COM (Steve Dyer) Organization: S.P. Dyer Computer Consulting, Cambridge MA Lines: 19 In article <3633@mtuxo.att.com> qeds@mtuxo.att.com (01226-E.SCHULZ) writes: >If you have a non-loaded metallic 4-wire Local Area Data Channel >(LADC), why use a modem? Send your data digitally end-to-end. >Our group developed the AT&T 2500/2600 Data Service Units for >DDS, and these things can be used on LADC channels. Mean time >between DSU failures is around 17 years. Can these be used legally on a LADS TelCo (I assume NeTel nomenclature for the same as LADC) circuit which runs from premise--CO--premise? I'm using a pair of 19.2kb Gandalf LDS309A data sets which do the job nicely, but a faster data rate would be great, assuming I can get appropriate synchronous serial interfaces which will do the job. Also, what is the cost of the 2500DSU? I'm sure many of us would be interested to know. -- Steve Dyer dyer@harvard.harvard.edu dyer@spdcc.COM aka {harvard,husc6,linus,ima,bbn,m2c,mipseast}!spdcc!dyer