Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ccivax.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!panda!talcott!harvard!seismo!rochester!ritcv!ccivax!rb From: rb@ccivax.UUCP (rex ballard) Newsgroups: net.dcom,net.mail Subject: Re: Re: PC Pursuit (opinions) Message-ID: <265@ccivax.UUCP> Date: Wed, 18-Sep-85 12:26:54 EDT Article-I.D.: ccivax.265 Posted: Wed Sep 18 12:26:54 1985 Date-Received: Fri, 20-Sep-85 06:36:04 EDT References: <63@seismo.CSS.GOV> <761@vortex.UUCP> <251@ccivax.UUCP> <433@kitty.UUCP> Organization: CCI Telephony Systems Group, Rochester NY Lines: 30 Xref: watmath net.dcom:1308 net.mail:1184 > > One of the major problems facing the telco's in general and the long distance > > companies in particular is the problem of people using SPRINT to call a long > > distance bulliten board. The modems are converting 300 baud signals into > > binary signals between the two computers. The lines being used are analog > > lines being digitized at the rate of about 50KB/sec. In other words, a line > ^^^^^^ > > capable of handling over 100 calls is being tied up for up to an hour. > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > You must be joking! No one on Usenet can possibly be that naive about > data communication. Or can they... > > +++ Larry Lippman @ Recognition Research Corp., Clarence, New York +++ > +++ UUCP {decvax,dual,rocksanne,rocksvax,watmath}!sunybcs!kitty!larry +++ > +++ VOICE 716/741-9185 {rice,shell}!baylor!/ +++ > +++ FAX 716/741-9635 {AT&T 3510D} syr!buf!/ +++ > +++ TELEX 69-71461 ansbak: ELGECOMCLR {via WUI} ihnp4!/ +++ > +++ +++ > +++ "Have you hugged your cat today?" +++ The line being referred to is the typical PCM LEASED LINE used by long distance carriers. The actual rate is between 50KB and 56KB. I used expr 50000 / 300 and came up with 166 300 baud lines into the system, assuming that ECC and TDM are used 100 is a conservative estamate. For 1200 baud lines, the number would be expr 50000 / 1200 or about 40 lines, for more info find a copy of the CCITT YELLOW BOOK. For statistical multiplexing, each number would be about half. I hope this clears up any confusion. Brought to you by Super Global Mega Corp .com