--------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBH00003Date: 07/09/97 From: RICHARD TOWN Time: 05:40pm \/To: MIKE FARRILL (Read 5 times) Subj: Init Strings -=> Quoting MIKE FARRILL to RICHARD TOWN <=- MF> Oh, I see. Are AGC amps widely used? Yes, every line's got one to limit input at exchange matrix to -12dB/m Which is why, if you limit your transmit level to that, the AGC amp shouldn't bite. Better to switch off the amp tho and feed -12dB/m yourself. However, that is _your_ modem into _your_ socket. There may be attenuation after that before your line gets to the exchange so experiment? I'm only half a mile away from my local exchange, connected with underground cable, AGC off rgdZ Richard --- FMail/386 1.02 * Origin: Another message via PackLink +44(0)1812972486 (2:254/235) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBH00004Date: 07/11/97 From: ANDRE BORCHERT Time: 07:54pm \/To: -==<< ALL >>==- (Read 5 times) Subj: ADSL Modems Hi, do you know anything about ADSL-Modems (or ASDL ?) Is it correct, that this modems could send at 2MBit/s ? mfg, *-==<< Andr >>==-* FmMB2417 _eMail spring-gardens@t-online.de_ *Internet* _http://home.t-online.de/home/spring-gardens_ *Spring Gardens Europe Network => Line 1/2 +49.5161.911090 V.34+/X.75* --- FIPS/32 v0.99a W95/NT [M] * Origin: Voice +49.5161.911091 Fax +49.5161.911092 (2:2437/922.20) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBH00005Date: 07/12/97 From: MIKE FARRILL Time: 09:31pm \/To: RICHARD TOWN (Read 5 times) Subj: Init Strings -> -=> Quoting MIKE FARRILL to RICHARD TOWN <=- -> -> MF> Oh, I see. Are AGC amps widely used? -> -> Yes, every line's got one to limit input at -> exchange matrix to -12dB/m Which is why, if -> you limit your transmit level to that, the -> AGC amp shouldn't bite. Doing that lowered my connection speeds.... I think that my line has a weak signal already, so why should I weaken it anymore when it probably won't even go about -12.. -> Better to switch off the amp tho and feed -12dB/m -> yourself. However, that is _your_ modem into -> _your_ socket. There may be attenuation after -> that before your line gets to the exchange so -> experiment? I'll try some different settings.... -> I'm only half a mile away from my local exchange, -> connected with underground cable, AGC off How can I find out how far I am from mine? --- Platinum Xpress/386/Wildcat! v1.3 * Origin: MADDOG! BBS : (510) 895-8089 : San Leandro, Ca. (1:215/13) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBI00000Date: 07/13/97 From: DAVID DRUMMOND Time: 08:22am \/To: JOHN ALDRICH (Read 5 times) Subj: Modem Selection? Answers? John, at 08:30 on Jul 10 1997, you wrote to Rick Collins ... RC>> Absolutely _wrong_. A 286 can handle data much much faster RC>> than a 33.6 modem can hope to provide it. Even a 4 Mhz 8086 RC>> has no problem with the data rate from a 33.6. Problems RC>> with those speeds on older hardware is usually correctable RC>> by replacing the non-buffered UART (either an 8250 or 16450) RC>> with a buffered UART like the 16550. JA> That's interesting, because my roomie, who's a TECH for a JA> local computer store, told me that our old Commodore Colt JA> (an old 8086 CPU machine) would not be capable of handling JA> anything more than a 14.4 modem....even with a 16550 UARTed JA> serial port. JA> Please forgive this question, but what are your JA> qualifications to discuss whether or not a certain CPU can JA> handle a 14.4? I mean no disrespect, simply I don't know JA> you, and I came in late on this discussion. :) Maybe this limitation is peculiar to the Commodore Colt. In the early '80s I used to successfully run the serial port (8250) in my 4MHz 8088 based XT at 57600 under DOS based comms apps with NO dropout. David --- Msgedsq/2 3.10 * Origin: The JabberWOCky +61 7 3868 1597 (3:640/305) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBI00001Date: 07/13/97 From: PETER LACUS Time: 08:31am \/To: EDWARD RUTLEDGE (Read 5 times) Subj: Modem Selection? 1/ Hello Edward, ER> No you will not be able to use the high speed (14,400 bps or ER> faster modem) with a 286. You may be able to send at that speed, ER> but you won't be able to receive. The CPU will simply be ER> overwhelmed by the data being thrown at it. In fact, it becomes ER> real iffy at 9,600 bps. Experience has shown that a 286 will ER> handle 4,800 bps without trouble, but 9,600 bps and it is not all ER> that stable. PMJI, but my 286 can receive and send at 14400, even at the same time using Janus or HS/Link protocols. 1650 CPS is pretty common here (compressed mail). HW: Compaq Deskpro 286N, USR Courier V32.bis SW: BinkleyTerm 2.60, HS/Link... Bedo. --- FMail 1.02 * Origin: Zorba the Buddha (2:422/209) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBI00002Date: 07/13/97 From: MIKE ROSS Time: 10:26am \/To: BRUCE CLARK (Read 5 times) Subj: Re: Modem Selection? Bruce Clark said the following to Edward Rutledge on the subject of Modem Selection? (11 Jul 97 21:48:00) -=> Quoting Henk Jaspers to Edward Rutledge <=- ER> No you will not be able to use the high speed (14,400 bps or ER> faster modem) with a 286. You may be able to send at that speed, ER> but you won't be able to receive. BC> Don't know what you're talking about. I was using a 14.4k BC> external modem with a 286 12MHz and the nonbuffered serial BC> port for over a year. I always used a 57.6k computer to BC> modem speed and never had any problems. HJ> Maybe I am one of the exceptions to the rule but I have used an HJ> external 14K4 HJ> modem with a 16MHz 286 pc and a 16450 UART for years without any HJ> problems. I even know of people that have used a 28K8 modem with an XT HJ> and a 16550 UART HJ> quite succesfully both sending and receiving... Edward is partly right. My own experience is with an 8088 XT, with 16550 uart, and a 14.4K external modem. The dte was at 57.6K locked. It worked perfectly with zmodem dl's and with many pages worth of direct ascii text. The dte however would lose characters near the end of long ascii documents as the modem's buffer caused an overflow around a 65K point. For all practical purposes this was insignificant even under desqview. --- Blue Wave/DOS v2.30 * Origin: Juxtaposition BBS. Lasalle, Quebec, Canada (1:167/133) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBI00003Date: 07/12/97 From: CORIDON HENSHAW Time: 02:14pm \/To: EDWARD RUTLEDGE (Read 5 times) Subj: Modem Selection? 1/ On Thursday June 26 1997 at 05:40, Edward Rutledge wrote to Robert Osborne: ER> No you will not be able to use the high speed (14,400 bps or ER> faster modem) with a 286. My 286-12, with a 8250 UART, can handle a sustained 57600 bps recieve over a null modem link (raw throughput ~5000+ cps) without dropping a byte. Before that, I used a 14.4Kbps modem on it for years without difficulty. --- GoldED/2 2.50 UNREG * Origin: For sale: 30 pieces of silver. Contact N. Gingrich. (1:250/820) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBJ00000Date: 07/14/97 From: BRUCE CLARK Time: 12:17am \/To: JOHN ALDRICH (Read 5 times) Subj: Modem Selection? Answers? -=> Quoting David Drummond to John Aldrich <=- RC>> Absolutely _wrong_. A 286 can handle data much much faster RC>> than a 33.6 modem can hope to provide it. Even a 4 Mhz 8086 RC>> has no problem with the data rate from a 33.6. Problems RC>> with those speeds on older hardware is usually correctable RC>> by replacing the non-buffered UART (either an 8250 or 16450) RC>> with a buffered UART like the 16550. JA> That's interesting, because my roomie, who's a TECH for a JA> local computer store, told me that our old Commodore Colt JA> (an old 8086 CPU machine) would not be capable of handling JA> anything more than a 14.4 modem....even with a 16550 UARTed JA> serial port. Is that anything like the "TECHs" at Radio Shack stores. It always suprises me at how many "so called" computer techs don't know what they're talking about. JA> Please forgive this question, but what are your JA> qualifications to discuss whether or not a certain CPU can JA> handle a 14.4? I mean no disrespect, simply I don't know JA> you, and I came in late on this discussion. :) DD> Maybe this limitation is peculiar to the Commodore Colt. In the early DD> '80s I used to successfully run the serial port (8250) in my 4MHz 8088 DD> based XT at 57600 under DOS based comms apps with NO dropout. ___ Blue Wave/386 v2.30 --- WILDMAIL!/WC v4.12 * Origin: COM-DAT BBS (1:105/314.0) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBJ00001Date: 07/13/97 From: WILLIAM BOWEN Time: 08:46pm \/To: DENNIS HADDOX (Read 5 times) Subj: Re: I am Confused! >>>Dennis Haddox Babbled to William while Partially Drunk<<< DH> Because I have one of them :) It is a very nice modem once the init DH> string is right, very good connects at all times. It is a USR clone. Great! I tried the modem you suggested and it seems to work now. I have volume control and everything. I assume yours is an internal as well? If you happen to know, what does the modem's speaker look like on yours? That would convince me that they are the same--it is a very unique speaker. I also seem to get less 'freezing' when using it in dos...actaully it pretty much elimianated the problem. ... ... Real computer users do it on the command line. ___ Blue Wave/QWK v2.12 --- Maximus/2 3.01 * Origin: William's, Vernon B.C. 28.8 250-549-2409 24hrs free (1:353/385) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: EBK00000Date: 07/15/97 From: PRATAP DERRICK Time: 10:28am \/To: ANDRE BORCHERT (Read 5 times) Subj: ADSL Modems Andre Borchert wrote in a message to -==<< All >>==-: AB> Hi, AB> do you know anything about ADSL-Modems (or ASDL ?) AB> Is it correct, that this modems could send at 2MBit/s ? I have heard up to 6MBits/s USR/3Com has one now... Check their Web page pratap@juno.com THE SPIRIT BBS (408)336-5532 *The Spirit Is Allways Free* Bay-Area Newsgroups-Jobs-Weather-Politics --- timEd 1.01 * Origin: That's The Spirit BBS (1:216/511)