Path: utzoo!utgpu!watmath!clyde!att!mtuxo!qeds From: qeds@mtuxo.att.com (01226-E.SCHULZ) Newsgroups: comp.dcom.modems Subject: Re: ARK LDM-4 Summary: AT&T DSUs work fine on LADC Message-ID: <3633@mtuxo.att.com> Date: 8 Dec 88 00:23:32 GMT References: <8811301805050FA.GUWI@RAI.CC.FSU.EDU> <8157@megaron.arizona.edu> <11@dsinc.UUCP> Organization: AT&T, Middletown NJ Lines: 21 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. This is the maximum cable length (in miles) for various speeds and wire gauges: Wire Gauge (AWG) DSU Speed 19 22 24 26 __________________________________ 9.6 Kbps 15.2 9.7 7.3 5.6 19.2 Kbps 10.7 6.6 5.0 3.9 56 Kbps 9.2 5.4 3.8 2.8 64 Kbps 9.2 5.4 3.8 2.8 Call me for more technical info. 1-800-247-1212 should get you to a sales rep. -- Ed Schulz, AT&T, Middletown, NJ (201)957-3899 mtdcb!eds