stevens@hsi.UUCP (Richard Stevens) (06/18/88)
In article <137@limbic.UUCP>, gil@limbic.UUCP (Gil Kloepfer Jr.) writes: > > One more point of clarification -- a lot of folks have been beating the > OBM (on-board modem) to death on the net, as well as port tty000. Please > folks, the hardware is not at fault. > I think the OBM is real junk, especially coming from "the" phone company. Before getting my 3b1 I was using a Racal-Vadic modem at 1200 with a dumb terminal, and *never* saw any line noise at all. Then with the OBM, the quality of local calls using it is awful (all the extraneous characters - tildes and the like). (There was all the talk on the net months ago about what causes this, how its usually the local Telco's fault, etc.) However, then I got a TrailBlazer Plus and when I use it at 1200 baud (using the same Bell protocol that the OBM uses) there are *never* any extraneous characters at all. Seems like Telebit understands the 1200 baud protocol better than AT&T. Why is it the non-AT&T modems are so much better than the AT&T modems ?? Richard Stevens Health Systems International, New Haven, CT { uunet | ihnp4 } ! hsi ! stevens
jcs@tarkus.UUCP (John C. Sucilla) (06/20/88)
In article <1020@hsi.UUCP> stevens@hsi.UUCP (Richard Stevens) writes: >In article <137@limbic.UUCP>, gil@limbic.UUCP (Gil Kloepfer Jr.) writes: >> >> One more point of clarification -- a lot of folks have been beating the >> OBM (on-board modem) to death on the net, as well as port tty000. Please >> folks, the hardware is not at fault. >> > >I think the OBM is real junk, especially coming from "the" phone >company. Blah Blah Blah >Seems like Telebit understands the 1200 baud protocol better than AT&T. Yeah right. The people who *wrote* the standard don't understand it. >Why is it the non-AT&T modems are so much better than the AT&T >modems ?? They aren't. What you need to understand is that your hardware was designed by Convergent, not AT&T. -- John "C". Sucilla, A silicon based life form. {ihnp4,chinet,ddsw1}!tarkus!jcs You have a better idea? Now's the time..
gil@limbic.UUCP (Gil Kloepfer Jr.) (06/20/88)
In article <137@limbic.UUCP>, I mistakenly write: > > One more point of clarification -- a lot of folks have been beating the > OBM (on-board modem) to death on the net, as well as port tty000. Please > folks, the hardware is not at fault. > In article <1020@hsi.UUCP> stevens@hsi.UUCP (Richard Stevens) writes: |>I think the OBM is real junk, especially coming from "the" phone |>company. Before getting my 3b1 I was using a Racal-Vadic modem |>at 1200 with a dumb terminal, and *never* saw any line noise at |>all. Then with the OBM, the quality of local calls using it is |>awful (all the extraneous characters - tildes and the like). Eek...I think my original words were clearly a case of "open mouth -- insert foot". Funny you should talk about line noise...before I got my unix-pc, I was using a real cheap 1200 baud modem with NO problem. Enter UNIX-pc with OBM -- now I sometimes get that "cute" little "}i" when I dial in. Not to mention Robert's thing about connecting with some smarter modems who think that the OBM is what it says it is (oops..forgot about that one I did). Although this one may be something in the OBM's software config, it still doesn't explain "}i". |>Why is it the non-AT&T modems are so much better than the AT&T |>modems ?? AT&T likes it when you retransmit over and over on a long distance call ;-) |> Richard Stevens |> Health Systems International, New Haven, CT |> { uunet | ihnp4 } ! hsi ! stevens ...Taking my beating.... +------------------------------------+----------------------------------------+ | Gil Kloepfer, Jr. | Net-Address: | | ICUS Software Systems | {boulder,talcott}!icus!limbic!gil | | P.O. Box 1 | Voice-net: (516) 968-6860 | | Islip Terrace, New York 11752 | Othernet: gil@limbic.UUCP | +------------------------------------+----------------------------------------+
mmengel@cuuxb.ATT.COM (~XT4103000~Marc Mengel~C25~G25~6184~) (06/20/88)
In article <1020@hsi.UUCP> stevens@hsi.UUCP (Richard Stevens) writes: $In article <137@limbic.UUCP>, gil@limbic.UUCP (Gil Kloepfer Jr.) writes: $> $> One more point of clarification -- a lot of folks have been beating the $> OBM (on-board modem) to death on the net, as well as port tty000. Please $> folks, the hardware is not at fault. $I think the OBM is real junk, especially coming from "the" phone $company. [Example of Racal-vadic & Telebit working better than 7300 OBM] $ $Why is it the non-AT&T modems are so much better than the AT&T $modems ?? Well, the OBM on the 7300 was sold by AT&T, but it is completely unrelated to any of the modems actually built by AT&T; it was just whatever Convergent Technologies decided to throw in the box when they built the machine. (The 7300 was designed & built many moons ago by Convergent for AT&T. The system, while sufficient for many people, isn't as strict about meeting interface spec.s as "our" equipment. As far as I know, it is the only modem Convergent ever built.) So, please don't generalize about AT&T modems based on the 7300. Most of our actual modem line, esp. the high end DATAPHONE II line, is *very* high quality. $ Richard Stevens $ Health Systems International, New Haven, CT $ { uunet | ihnp4 } ! hsi ! stevens -- Marc Mengel attmail!mmengel {lll-crg|mtune|ihnp4}!cuuxb!mmengel
alex@umbc3.UMD.EDU (Alex S. Crain) (06/20/88)
Lessee... 512K of memory goes for about $200 cheap. a 10megabyte disk is worth at least $100. a 10" monitor is >$50, last I checked... a disk drive is another $60, and $40 for a keyboard ain't bad, Since AT&T is just *giving away* 7300s, and, the above setup costs $500, that means the OBM costs $50! And if you ask me, pretty good for a modem that has NEVER given me ANY grief! I've got my pc connected to the house phone line, which it calls out on about 4 times a day. In spite of having people pick up the phone and DIAL IT, I've only ONCE had uucico get confused enough to abort the transfer! I use kermit for remote logins daily, without anywhere near the line noise that I used to get out of my commadore. BTW: I use HDB uucp, w/ the system 7 mailer. -- :alex. nerwin!alex@umbc3.umd.edu alex@umbc3.umd.edu
bob@rush.cts.com (Bob Ames) (06/22/88)
In article <1861@cuuxb.ATT.COM>, mmengel@cuuxb.ATT.COM (~XT4103000~Marc Mengel~C25~G25~6184~) writes: > > So, please don't generalize about AT&T modems based on > the 7300. Most of our actual modem line, esp. the high > end DATAPHONE II line, is *very* high quality. Gee, if I can't call an AT&T modem AT&T, what should I call it? I feel that AT&T should not put their name on equipment that doesn't even meet the BELL (AT&T) 212A standard. Bob Ames INET: bob@rush.cts.com Rush UNIKS PC Support Center Bell: 208-733-0931 UUCP: { , ucsd, nosc, sun! , hplabs!hp-sdd}!crash!rush!bob "I didn't expect the Spanish Inquisition!" {icus, jack}!/ "We each pay a fabulous price - for our visions of paradise." - N Peart 1987
erict@flatline.UUCP (j eric townsend) (06/23/88)
In article <1023@umbc3.UMD.EDU>, alex@umbc3.UMD.EDU (Alex S. Crain) writes: [description of good luck with the OBM] Me too. I'm running stock 3.0 w/ development set (as if that matters :-) > BTW: I use HDB uucp, w/ the system 7 mailer. What release of unix? -- Skate UNIX or go home, boogie boy... "But why should i type "rm -r $HOME" if I want to play trek???" J. Eric Townsend ->uunet!nuchat!flatline!erict smail:511Parker#2,Hstn,Tx,77007 ..!bellcore!tness1!/
becker@ziebmef.uucp (Bruce Becker) (06/24/88)
In article <1023@umbc3.UMD.EDU> alex@umbc3.UMD.EDU (Alex S. Crain) writes: > BTW: I use HDB uucp, w/ the system 7 mailer. >-- > :alex. Alex, how do you get to have HDB uucp? I'd love to get it!! Cheers, Bruce Becker UUCP: ...!mnetor!lsuc!becker!bdb, ...!mnetor!unicus!humvax!becker BitNet: BECKER@HUMBER.BITNET
hoffman@pitt.UUCP (Bob Hoffman) (07/01/88)
In article <109@tarkus.UUCP> jcs@tarkus.UUCP (John C. Sucilla) writes: >>Why is it the non-AT&T modems are so much better than the AT&T >>modems ?? > >They aren't. What you need to understand is that your hardware was >designed by Convergent, not AT&T. While the whole machine may have been designed by Convergent, the modem chip (and I quote from the hardware description document) is an "AT&T proprietary Switched Capacitor Modem 882A single chip circuit". ---Bob. -- Bob Hoffman, N3CVL {allegra, bellcore, cadre, idis, psuvax1}!pitt!hoffman Pitt Computer Science hoffman@vax.cs.pittsburgh.edu