--------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00003Date: 04/06/97 From: DAVID BOWERMAN Time: 01:12pm \/To: MIKE FARRILL (Read 5 times) Subj: 4400cps on a 33600/3 MIKE FARRILL wrote in a message to RICK COLLINS: RC> 2) Max modem-modem throughput at 33,600, with error correction is RC> 4200 bps. EC overhead reduces this to the 4000 cps range. MF> Is the EC overhead you are refering to come from the use of the MF> Zmodem protocol? Y-modem-g is always faster. And also, he could MF> be using the 512k lap-m packet size which would give more MF> performance. What Rick is referring to is the overhead in the error correcting protocol and not in the file transfer protocol. Z-modem overhead will reduce the maximum possible transfer speed even further. As for the LAPM packet size, the maximum on a Courier using LAPM is 244 bytes. Plugging that size into the overhead calculation gives us 4015CPS as a maximum. Using MNP EC with it's 256 byte packet size gives a maximum of 4021CPS. Enabling data compression actually reduces the throughput on incompressible data reduces the maximum using 244 byte packets to 4000CPS. Regards, David --- timEd/2 1.10+ * Origin: Frog Hollow -- a scenic backroad off the Infobahn (1:153/290) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00004Date: 04/06/97 From: DAVID BOWERMAN Time: 01:21pm \/To: MIKE FARRILL (Read 5 times) Subj: inside wiring MIKE FARRILL wrote in a message to TONY COLONNO: TC> If you are talking about your house wiring, check your state and TC> local codes. But I would go with 12-2 romex, 12-3 for split or TC> double curcits. MF> Are those twisted pair? No. That wiring is for AC line use not data use. Regards, David --- timEd/2 1.10+ * Origin: Frog Hollow -- a scenic backroad off the Infobahn (1:153/290) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00005Date: 04/06/97 From: EUGEN WOIWOD Time: 08:55pm \/To: DAVID BOWERMAN (Read 5 times) Subj: 4400cps on a 33600/3 |*****************|David Bowerman wrote: While Eugen was busy watching Star Trek DS9 :), David Bowerman wrote.. DB> I once saw a system transferring a .ARJ compressed file using a 14k4 DB> connect DB> showing a CPS rate of ~4300CPS. The owner had set the fudge factor in DB> Terminate to 200% since that "gave him faster file transfers". It took |*************************************| Well, I can only hope he set it to 0% so it doesn't fudge CPS rates :) Internet: Eugen_Woiwod@Mindlink.bc.ca ... Mynocks... yeah, chewin' on the power cab#%#*(^@*!... NO CARRIER --- Terminate 4.00/Pro * Origin: Deep Space Nine :) (1:153/290.4) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00006Date: 04/05/97 From: PHILIP BUSKEY Time: 05:19pm \/To: REGGIE ARFORD (Read 5 times) Subj: What ??? Hia Reggie I think you better send the message that this is replyiny to. back to whoever you intended it for, for some reason I got it instead. but thanks anyway lr --- FLAME v1.1 * Origin: the spa! #1 in Western Massachusetts! (413) 536-4365 (1:321/307) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00007Date: 04/05/97 From: PHILIP BUSKEY Time: 05:25pm \/To: REGGIE ARFORD (Read 5 times) Subj: Kill It Hi Again could you do me a favore, this message wont go away I keep getting---- you have a message waiting----- and after I read it it still says that it is there, can you deleat it from your end or tell the sysops if you cant let me know and i will call them to get it out of the system thanks in advance for doing this lr --- FLAME v1.1 * Origin: the spa! #1 in Western Massachusetts! (413) 536-4365 (1:321/307) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00008Date: 04/07/97 From: WALTER LUFFMAN Time: 1:16am \/To: LARRY GALLO (Read 5 times) Subj: bbs com. -=> Quoting Larry Gallo to All <=- LG> I am having a little trouble with soft ware I am currently running. I LG> wonder if you could suggest a good software package for bbs LG> communications upload download ect.... Thanking you in advance larry You don't mention which operating system you're using; but assuming it's some flavor of DOS, I recommend Fred Brucker's {COMMO}, version 7. It's small, fast, and very powerful -- I use it under DOS, Win3.11 and OS/2 Warp3. It's also very reasonably priced, especially when you consider it comes with a versatile (and easy to use) macro language that can be used to both automate functions and add new capabilities. If you run OS/2 and want a native-mode app, I recommend LiveWire, version 3.21. Includes both WPS-graphical and text-mode versions. Excellent software, and also very reasonably priced. As far as Windows apps go, I can't help you -- don't use them myself -- but I'm sure someone here can. Walter, wluffman@usit.net ... Consciousness: That annoying time between naps. --- InterEcho 1.19 * Origin: The Lucky Troll/2 BBS (901)-757-2076 (1:123/315) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00009Date: 04/06/97 From: CHARLES BROWN Time: 12:40pm \/To: ALL (Read 5 times) Subj: 56.6k Is the 56.6k actually real or is it all done via a software component? mainly.. does the 56.6 upgrade activate some chip or something already built in to make the 56.6 become active.. or is it just some sort of quicker protocal with better compression? --- Telegard v3.02/mL * Origin: The Outer Limits 805-366-8566 (1:210/58) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00010Date: 04/06/97 From: RICK COLLINS Time: 09:27pm \/To: MIKE FARRILL (Read 5 times) Subj: 4400cps on a 33600/3 -=> Quoting MIKE FARRILL to RICK COLLINS <=- -=> FidoMail to 1:163/215, please.-=< -> 2) Max modem-modem throughput at 33,600, with error correction is -> 4200 bps. EC overhead reduces this to the 4000 cps range. mf> Is the EC overhead you are refering to come from the use of the mf> Zmodem protocol? Y-modem-g is always faster. And also, he mf> could be using the 512k lap-m packet size which would give more mf> performance. The EC overhead I was referring to was that imposed by LAPM or MNP 4. The size of the packet doesn't matter - no matter how big it is it will contain extra data for the purposes of managing the packet. Naturally, the larger the packet, the smaller the _percentage_ of each packet that is "non data", but you will not _exceed_ the maximum rate of the channel even if you reduce the overhead to zero. A "perfect" channel, using 8 bytes per char and no packet overhead (which, of course, is not possible) would give 33600/8 = 4200 bps, somewhat less than the 4500 bps claimed. Similarly, Zmodem or YModem-g won't change that. TTFN. Rick. Ottawa, ON 6 Apr 21:33 --- Blue Wave/DOS v2.20 * Origin: BitByters BBS, Rockland ON, Can. (613)446-7773 v34, (1:163/215) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00011Date: 04/06/97 From: RICK COLLINS Time: 09:34pm \/To: LARRY GALLO (Read 5 times) Subj: bbs com. -=> Quoting Larry Gallo to Tony Frew <=- -=> FidoMail to 1:163/215, please.-=< lg> yes I'm running the same thing ter 400 but under win 3.11 my lg> problem is that i have a usr sporster modem that needs lg> windowsfor its error correction and i haven't got fig the best lg> string as yet the book string doen't pick up or better doen't lg> make the handshak at all if i use ter 400 init for the modem it lg> works but if i try to use z modem I get ICR errors after about lg> 60 secs and effecity drops down until the other end gives up or lg> this end reports the error . i can use other protocals but i got lg> the 14.4 to speed up not to slow down i think i might have to lg> phone USR and get the exact strng for this software or change to lg> a wibdow based software so i can use the winpri drivers that are lg> a part of the modem's package.... any insight is appreciated and lg> thank you for responding....The mouse Larry, if you are using a USR Sportster Si, then chances are the strings recommended by Terminate are not appropriate for your modem. The Si is an RPI modem and does _not_ use the normal USR command set. It won't matter much - there is no magic init that will make your RPI modem reliable _unless_ you use a comm program that supports RPI _or_ a Windows program using the WinRPI driver. TTFN. Rick. Ottawa, ON 6 Apr 21:36 --- Blue Wave/DOS v2.20 * Origin: BitByters BBS, Rockland ON, Can. (613)446-7773 v34, (1:163/215) --------------- FIDO MESSAGE AREA==> TOPIC: 105 HIGH SPEED MODEM Ref: E4C00012Date: 04/05/97 From: BOB SHANKIE Time: 08:46pm \/To: BILL COOPER (Read 5 times) Subj: 4400cps on a 33600/3 *** Quoting Bill Cooper to Bob Shankie dated 04-02-97 *** > I think decaffinated Folgers would work wonders for that attitude. > I don't have the slightest idas as to what you mean by that . --- * Origin: CRIMP BBS (1:2410/116)