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- ┌─────┬───────────────────────────────────────────────────────────────────────╖
- │ 1 │ How to set up your USR Modem for best performance ║
- ╘═════╧═══════════════════════════════════════════════════════════════════════╝
-
- How to get the *fastest* throughput with USR high speed modems on SANDS:
-
- There are 3 basic models of the HST and Dual Standard described here.
- Enter the command: ati <return> to see which one you have, a 964, 1442,
- or 1443.
-
- The "964" is the original "HST" model. It is only capable of connecting
- at 9600 bps with another USRobotics HST or HST/Dual. The maximum connect
- speed with other brands of modems is 2400 bps or lower.
-
- The "1442" was the only USRobotics model made available in three versions:
- The "HST 14400 bps"
- The "V.32 9600 bps"
- The "Dual Standard" which is a combination of the HST & V.32
-
- If you have the "HST 14400", you can connect @ 9600 bps with older HST
- 964's and connect @ 14400 bps with newer HST 14400's and "Duals."
- Connect speeds with other brands is still limited to a max. speed of
- 2400 bps.
-
- If you have the "V.32" model, you can connect at 9600 bps with any brand
- of modem that also supports v.32 modulation and connect at 2400 with
- modems that do not have v.32 capabilities. A "Courier V.32" will only
- connect at 2400 to a plain "HST" however.
-
- If you have the "Dual Standard" you have the best of all worlds, as you
- can connect @ 9600 with older HST's, connect @ 9600 to any brand of
- modem which complies with v.32, plus being able to connect @ 14400 to
- another HST 14400 or "Dual."
-
- The newest model, the "1443" is available only in two configurations:
- The "V.32 bis" (14400bps)
- The "Dual Standard"
-
- The 1443 is identical to the 1442, but with the addition of v.32bis
- modulation. V.32bis is the newest agreed upon international modulation
- standard for 14,400 bps modems which became official in Feb. 1991.
-
- If you have the "V.32bis" model, you can connect @ 14400 bps with any
- brand of modem that also has v.32bis capabilities, connect @ 9600 bps
- with any modem that has v.32 (not bis) capabilities, and connect with
- other modems at 2400, or lower. Connections to "HST only" modems are
- still limited to 2400 bps.
-
- As before, if you have the newest "Dual Standard" you have the same
- features as the v.32bis version plus the added capability of connecting
- with all models of the "HST" at maximum speed.
-
- The plain "HST" is still available, but only in the 1442 configuration,
- since there is nothing to be gained by making a 1443 version. Look for
- USRobotics to gradually phase this model out.
-
- Finally, don't confuse the "vee-dots." v.32 and v.32bis refer to
- modulation or "speed" standards. v.42 and v.42bis refer to
- error-correction and compression standards.
-
-
- Here are the USRobotics Courier 14400 HST Dual Standard Settings...
-
- Dip switch settings: (will vary somewhat depending on your software)
-
- 1 2 3 4 5 6 7 8 9 10 QUAD
- UP UP DN UP DN UP UP DN DN UP UP
-
- Internal modem "software" settings...
- ati4 <return>
-
- ┌────────> set this to B0 on DUALs to *FORCE* a v.32 connection with
- ┌─┴┐ ┌──┐ another DUAL, otherwise leave it B1.
- ╔╡B1│ C1 E1 F1 M1 Q0 V1 │X7├┐ Callers with the new V.32"bis" model
- ║└──┘ └──┘│ 1443 HST/Duals should use B0 for ALL
- ║ BAUD=38400 PARITY=N WORDLEN=8│ calls except those to 964 HST's and
- ║ DIAL=HUNT ON HOOK TIMER │ 1442 HST/Duals. V.32bis-to-V.32bis
- ║ │ would therefore be the "preferred"
- ╚═> "DUAL" owners will want to │ mode. *Sysops* w/either "Dual" will
- use B0 here when running │ set this to B0 to permit all HST
- in "HOST" mode. │ as well as V.32 & V.32bis callers.
- └────> Use X7 here stead of X6 to kill
- the erronious "VOICE" response when
- line is actually "Busy".
-
- ╔═══════════════════════════════════════╦════> V.42bis models only.
- ┌─╨─┐ * ╔═╩═╗ Use &A2 and &K0 for
- &A3 &B1 &C1 &D2 &G0 &H1 &I0 ┌&J0 ║&K3║ models without V.42
- &L0 &M4 &N0 &P0 &R2 &S1 &X0 │&Y1 ╚═╦═╝ Use &A0 w/Prodigy.
- └───┐ ║ I'm told this helps
- S00=000 S01=000 S02=043 S03=013 │ ║ get Prodigy to work
- S04=010 S05=008 S06=002 S07=090 │ ║ with the HST and Dual.
- S08=002 S09=006 S10=007 S11=060 │ ╚════> Sysop's would use &K1
- S12=050 S13=000 S14=000 S15=000 │ here to "allow" MNP-5
- S16=000 S17=000 S18=000 S19=000 │ callers, though I can't
- S20=000 S21=010 S22=017 S23=019 │ think of any reason why
- S24=150 S25=000 S26=000 ╔>S27=000 │ you'd ever want to as
- S28=008 ║S32=000║ S34=000 ║ S38=000 │ MNP-5 slows ZIP file
- ╚═══╦═══╝ ║ │ transfers.
- ┌────────────╜ ║ │
- │ on 1443's: ║ └─────> &J0 no longer avail.
- └> Set S32=6 to use ║ on the new 1443 models.
- voice/data switch ║
- for modem "reset" ╚═> Set S27=128 if your comm program chokes
- or S32=3 to use it on the new "connect" messages on 1443's
- to "redial" last #
-
- ati7 <return>
- Product type External <---- Internal models available also
- Options HST,V32 <---- Indicates this modem is a DUAL
- Clock Freq 10.0Mhz <---- Will be 12 or 16 Mhz on newer models
- Eprom 64k
- Ram 32k <---- 8k on older models without V.42bis
-
- on 1442's on 1443's
- Supervisor date 11/20/90 11/30/90
- IOP date 05/17/89 11/15/90
- DSP date 09/18/89 11/30/90
-
- Supervisor rev 2.3 3.0 on new v.32bis/1443 duals
- IOP rev 1.0 1.3 " " " " "
- DSP rev 2 10 " " " " "
-
- R9696 rev 204C not used w/new v.32bis/1443 duals
-
-
- Setting up your communications software to work with the HST and Dual:
-
- QMODEM: (latest version: 4.xxx)
-
- Run Qinstall from the command line or call ALT-N from within
- Qmodem. Go to the Modem setup screen. Under Communications Parameters,
- set your default baud rate at 38,400 for all 14.4 HST's & duals. For
- older HST 964's set this to 19,200. Next go to the Modem Command window,
- set your Initialization command to ATZ^M and set the Hangup Command to
- DTR (no ^M after the DTR). Now go to the Toggles window. Set Xon/Xoff
- Flow to OFF, Cts/Rts Flow to ON and Lock DTE Baud Rate to ON. If your
- hardware configuration will support it (try & see) set RTS when writing
- to ON. If you have trouble receiving files then set this back to OFF.
- If you have a 16550 UART chip in your serial port then set FIFO during
- shell to ON, High speed Xmit to ON and 16550 UART Enable to ON. When
- building your dialing directory entries, set ALL entries to match your
- Default Baud Rate set up above, either 38,400 for New HST's and Duals or
- 19,200 for the older HST 964's. Qmodem has a very nice "Auto setup" for
- your modem (ALT-N-M-Q) unless you have some peculiar reason for Not
- wanting to use it. It really simplifies setting up the HST. If you DO
- use Qmodem's auto setup, be sure to check your modem "toggles" screen
- afterwards, as RTS when writing is reset anytime the Quick modem config
- routine is called. - File transfer hint: Unload any and all TSR's
- before trying to transfer files at high speed. Also, Qmodem versions
- prior to 4.2(F) do not support the extended "connect" messages generated
- by the new 1443 models.
-
-
- TELIX: (latest version: 3.12)
-
- Run Telix then hit ALT-O to go to Telix's configuration screen.
- Open the Terminal Options window. Set item "A" to 38400 for all 14.4 kbd
- HST's and Duals or set it to 19200 for older HST 964's. Next set item
- "J" Xon/Xoff software Flow Control to OFF. Set item "K" Cts/Rts
- hardware flow control to ON. Set item "L" DSR/DTR hardware flow control
- to OFF. Escape back to the main menu then enter the General Setup
- window. Set item "O" Shell: 16550 buffer on to ON if you have a 16550
- UART in your serial port. Escape back to the main setup menu again then
- enter the Modem and Dialing Parameter Setup window. Set item "A" Init
- string to ATZ^M. Set item "M" Auto Baud detect to OFF. Set item "N" Drop
- DTR to hangup to ON. Escape back to the main menu screen and SAVE your
- setup. When you build your dialing directory entries, remember to set
- ALL entries to either 38400 or 19200, depending on what you set as your
- default baud rate in the terminal options screen. Unload any TSR's for
- best file transfer results.
-
- Both Telix and Qmodem have internal Zmodem protocol and both
- programs also support external protocols. Setup for using these external
- protocols encompasses a whole other subject which is too involved to try
- to cover here.
-
- I've had some experience using Telix, Telemate, Qmodem, GT
- Powercom, {Commo}, CrossTalk, Carbon Copy, Smarterm, and yes, even
- Procomm. I'll have to admit to personally preferring the new Qmodem
- however for its overall ease of setup, EMS support, wide assortment of
- built-in modem configuration routines, and enormous (up to 1000 lines)
- scrollback buffer. Qmodem author John Friel deserves a pat on the back
- and your shareware registration fee for this one. It's a winner!
-
-
- OTHER COMMUNICATIONS PROGRAMS:
-
- Obviously, due to space limitations, I cannot begin to cover
- every possible setup for the myriad of communications programs out
- there. I chose to use Qmodem and Telix as two of the more popular
- examples. Most of you should be able to translate these setups for your
- own favorite program. Just remember that you *MUST* LOCK your serial
- port at 38.4 or 19.2 (that means set "Autobaud" to OFF) and set your
- handshaking or flow control for Rts/Cts ON and Xon/Xoff OFF, enable the
- 16550 UART buffer if you have it, and set ALL your dialing directory
- entries to match your serial port baud rate, 38.4 or 19.2, regardless of
- their actual connect speed.
-
- I deliberately chose NOT to mention Procomm or Procomm Plus
- although these programs are extremely popular with novice users. Present
- versions of Procomm (2.43) and Procomm Plus (1.1b) are reported as
- having some problems with high speed file transfers. Sure, there are
- some patches and hacks around that help Procomm overcome some of this
- but it's been such a schlock communications program for so long in its
- current form that almost anything would be an improvement. To you
- novices out there; it's high time you put Procomm aside and moved ahead!
- To the authors of Procomm; we have endured the limitations of this
- program long enough. Stop resting on your laurels. Remember WordStar? A
- substantial product upgrade is long, long overdue. Today's high
- technology, high speed modems are demanding it!
-
- 100KTEST.RUN
-
- We have a very special file here on SANDS that is used for testing our
- results at "tweaking" our comm program and modem setup strings. The
- filename is 100KTEST.RUN and consists of 1,024,000 bytes (1 megabyte) of
- 09 hex. Results are obtained using Chuck Forsberg's famous "DSZ" Zmodem
- transfer protocol on both ends, with MobyTurbo disabled (-M) and RLE
- compression on (-Z). You must have DSZ.COM or DSZ.EXE and a simple
- little batch file to run it with. (Note: you must use DSZ. Immitations,
- such as the internal Zmodem offered with Telix and Qmodem won't work for
- this test.)
-
- From the terminal screen on the SANDS BBS, type: D Z 100KTEST.RUN S and
- hit the <enter> key. Immediately shell to DOS and run the RZ batch file:
-
- DSZ speed 38400 port 2 ha on pd0 z pr1 rz -yMZ
-
- Substitute your COM port # where it says port 2 Replace 38400 with 19200
- if you have the model 964 HST.
-
- Be very mindful of CASE. DSZ commands are case sensitive & frequently have
- opposite meanings when entered in the wrong case.
-
- If your modem is properly "tweaked" you will see a file transfer rate of:
-
- HST 964: 20,480 to 25,600 cps
- HST 1442: 20,480 to 25,600 cps
- HST 1443: 34,133 to 51,200 cps
-
- You'll really get a "rush" the first time you see 100K bytes scream across
- the telephone wires in less than 7 seconds!
-
- Prepared 1/26/91 by Bill Garfield with the help of SANDS BBS and the SANDS
- system users.
-
- Sands BBS (713) 961-0365 - CoSysop Bill Garfield
-
-
- Bulletin Read: Main Board # 1
-
- Bulletin: (1-7), (R)elist, (Enter)=none?
-