HDTenEightyP/NetNews huggingface dataset:
Subject: Re: Possible FAQ question - What is V.32, V.32bis etc. 
Distribution: world
Organization: BT
X-Mailer: Simple NEWS 1.90 (ka9q DIS 1.19)
Date: Sat, 2 Jan 1993 21:17:24 +0000

In article <Dec.29.20.28.10.1992.9839@pilot.njin.net> birchall@pilot.njin.net writes:

>sylve_ge@jhunix.hcf.jhu.edu (Gerald Sylvester) writes:
>
>>what I understand now, V.32 is just the 9600 standard, V.42bis is just
>>MNP levels 2-5 data compression to bring a 9600 up to 14.4k, and V.32bis
>>and V.42 more data compression and/or data correction.
>
>AAAAH!  What lies have they been telling you??? :)
>
>V.32 is the 9600 standard.
>V.32bis is the 14400 standard.
>
>V.42 is error correction.
>V.42bis is mainly compression, theoretically up to 4x.
>
>V.32 = 9600
>V.42 = 14400

I think this is a mistype (as you got it correct higher up). V.42 has nothing
to do with any speed - it is an error correction scheme.

Going back to what Gerald wrote V.42bis isn't MNP levels 2-5, it's a
compression scheme which has nothing to do with MNP at all. It usually sits on
top of V.42 error correction. V.42 uses LAP-M error correction but it does also
support MNP2-4. V.42bis does *not* support MNP5.

>
>V.32 + V.42bis = 9600 - 38400 (38400 = 9600 x 4)
>V.32bis + V.42bis = 14400 - 57600. (57600 = 14400 x 4)
>
>-Shag

-----------------------------------------
Lawrence Kirby | fred@genesis.demon.co.uk
Wilts, England | 70734.126@compuserve.com
-----------------------------------------
Newsgroups: comp.dcom.modems
From: larry@gator.use.com (Larry Snyder)
Subject: Re: WB Fax Upgrade
Organization: Gator Communications - Feeds-R-Us 219-289-3745 
Date: Sun, 3 Jan 1993 14:26:53 GMT

gerg@netcom.com (Greg Andrews) writes:

>duncan@ravel.ati.com (Jim Duncan) writes:
>>
>>Yesterday I received the fax/ROM upgrades for my Worldblazer. The kit
>>basically adds fax capability and provides the latest v. 7.01 ROM's.

Is the upgrade in the 7.01 ROMs or are others chips required to
enable FAX?

I'm just wondering.  I have no interest in FAX (at this time) but I 
now have 7.01 ROMS (thanks :)..


-- 
Larry Snyder                                    internet: larry@gator.use.com
keeper of the Gator                                   uucp: uunet!gator!larry
From: birchall@pilot.njin.net (Shag)
Newsgroups: comp.dcom.modems
Subject: Re: PPI Modem IS REALLLLLLLY GOOD!!! :) :)
Date: 26 Dec 92 05:27:24 GMT
Organization: Screaming in Digital, the Queensryche Digest

jemartin@nyx.cs.du.edu (John Martin) writes:

>I just got a new PM14400FX less than a week ago.  This is the first modem
>I've owned which does better than 2400 bps, but I seem to have got it
>going fairly smoothly.  I can connect to virtually anything at 14.4k, but
>unfortunately, when I lock the com port at anything higher than 14.4k
>(especially 38.4k and 57.6k), characters are dropped all over the place
>during interactive use.  However, file transfers are great (>2500 cps with
>DSZ Mobyturbo).  I am using the Hayes-compatible factory defaults (at&f0)
>and have Hardware flow control enabled and Software flow control disabled.

I've noticed character lossage at extremely high speeds too, I don't know
why, but I'm not blaming the modem.  I think a normal interactive session 
just isn't as careful about things as a Zmodem transfer is. ;)

I'm running through a terminal server and across the net to a Sparc, so I
have plenty of fun speed settings:
	My DCE (computer-to-modem):	19200
	DTE (modem-to-modem):		9600 (or 14400 if I call LD :)
	Server's DCE			19200
	Net Speed			One of those big Carl Sagan numbers.
	STTY (Sparc port speed) 	19200

As long as my DCE, the server's DCE, and the Sparc's STTY _all_ match, I don't
get much in the way of problems.

And with regard to your question about ROM upgrades, yes, it's that easy.
Call PPI Tech Support (805) 496-7707, if it's after hours, leave a message...
All they'll need is your name, address, and serial number of your unit.  While
you've got them on the phone, ask for v1.22 of QuickLink II/Fax, the software
that comes with the modem - it's been updated too.

-Shag
-- 
Shag                    | Operator, ShagNET | Editor of "Screaming in Digital" 
birchall@pilot.njin.net |  Rutgers / NJIN   |  The Queensryche E-mail Digest 
birchall@njin.bitnet    | dialup access for | queensryche-owner@pilot.njin.net
shag@most.other.places  | Burlington County | Anything Queensryche, every week
From: esims@froggy.win.net (Ed Sims)
Newsgroups: comp.dcom.modems
Subject: Re: USR Sportster Wanted
Date: 1 Jan 93 08:00:46 GMT
Reply-To: esims@froggy.win.net (Ed Sims)
Organization: The Internet
X-Unparsable-Date: Thu, 31 Dec 1992 4:35.12.80

>USR supports only Class 1, all other manufacturers implement Class 2.
>This means, that you cannot use the FAX capability of a USR modem
>with one of the available programs like WinFAX, GPFAX... and the
>software USR supplies runs only under MS-DOS... :-(
>
*My* Sportster 14,400 works with Winfax.  As a matter of fact,
before I bought the Sportster, I called Delrina to confirm that it
would. 

My problem is that we have had two Sportster 14,400 w/FAX and one
Shared Access (built on same chassis) go up in smoke.  All three
displayed the same symptoms.  It took forever to get through to USR
customer support and, when I finally did, they told me to expect to
wait 6-8 weeks for replacements.  We returned the Sportsters
(except the one I kept) to the dealer and the replacement Shared
Access was returned in 5 weeks from USR.  At the time, we were
considering replacing over 100 UDS Motorola v32/42bis modems with
the Sportsters. 

 





Ed Sims
2605 E. Butterfield Dr.
Indianapolis, IN 46220
(317)257-1288
Internet: esims@froggy.win.net
From: BH4884@ALBNYVMS.BITNET
Newsgroups: comp.dcom.modems
Subject: Supra v.32bis to USR 16.8k connection problem
Date: 26 Dec 92 20:14:00 GMT
Organization: The Internet


        Having recently received a Supra v.32bis, I attempted to
connect to a board using a USR 16.8k modem. After repeated attempts,
all I could get was a 12.0k connect which gave only garbage. I've
tried \n1, \n2, \n3, \n4. None seem to work. The Supra arrived with
1.2-H ROMS. If the ROM needs to be upgraded (I believe that the
USR 16.8k's are fairly new on the market?) how would I go about
requesting a new set of ROMS? From Supra itself or from the
Mail Order company? Do I need a new set of ROMS or is the connection
problem a result of some other problem? (I'm using factory set &F1)

Any help would be appreciated.
Thanks,
BH4884%ALBNYVMS.BITNET@UACSC2.ALBANY.EDU
(Brian)
From: meeb467@bongo.cc.utexas.edu
Newsgroups: comp.dcom.modems
Subject: Info wanted--Software for fax modem
Date: 30 Dec 92 23:33:48 GMT
Reply-To: meeb467@bongo.cc.utexas.edu ()
Organization: The University of Texas at Austin, Austin TX
Originator: meeb467@bongo.cc.utexas.edu

Hi netters,

  I am considering buying a fax modem and need some advice from experienced
fax modem users. I need info about using modem on Macintosh computer.

  (1) First, could anyone suggest the best (or best ones) communication program
      that dials modem and connects to BBS.
  (2) What is the best software for sending/receiving fax using the modem ?
      I only heard the name "faxSTF" but knows nothing about it.
      Can anybody describe the capability of it ?
      Can "faxSTF" do the dialing too ?
  (3) What software is need to drive the "voice mail" function that allows
      the modem acts like a digital answering machine ?

  Your suggestion and advice will be greatly apprecated.
  E-mail response is preferred but I will try to read the articles in
"comp.dcom.modems" news group. Thanks.

Wei-Ren Chang
Newsgroups: comp.dcom.modems
From: eleung@fraser.sfu.ca (Edward Leung)
Subject: Re: Upgrading a ZyXEL 1496E to an E+
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Thu, 31 Dec 1992 02:05:28 GMT

jack@sybil.jpl.nasa.gov (Jack Kobzeff) writes:

>In my conversation with a ZyXel rep, she said that there was no upgrade
>from a E to a E+. They said that the major changes are that the clock speed
>is higher and the EPROMS are larger. I reaaly didn't get into much detail.

>Jack Kobzeff     (jack@????.jpl.nasa.gov) Mail address is changing

Yes, and I have already figured out most if not all of the necessary changes.
I just need to see a real E+ to make sure.

Ed.
Newsgroups: comp.dcom.modems
From: chelf@lunatix.uucp (Chad Helfenberger)
Subject: ROMs interchangable on Rockwell?
Organization: Lexington Public Access Unix. -KY- (606) 255-9121
Date: Tue, 22 Dec 1992 05:10:13 GMT

Can I use a ROM from say, a Boca or Supra on my Zoom (v.32bis, of course).  
The ROMs on Zooms are too flaky..

-- 
Chad Helfenberger
(chelf@lunatix.uucp)
From: mju@mudos.ann-arbor.mi.us (Marc Unangst)
Newsgroups: comp.dcom.modems
Subject: Re: Hayes lawyers intimidate competition (was: Hayes Press Release)
Date: 3 Jan 1993 00:28:35 -0500
Organization: The Programmers' Pit Stop, Ann Arbor MI
NNTP-Posting-Host: mudos.ann-arbor.mi.us

In article <105934@bu.edu> heiser@acs.bu.edu (William Heiser) writes:
>the T3000 doesn't
>even have FAX capability yet.

This isn't true -- Telebit has started shipping the T3000/WorldBlazer
FAX upgrades, although I'm not sure that you can buy a T3000 or WB
with the FAX ROMs already installed.

I should also point out that Toby is an engineer, not a marketroid.
He doesn't write the press releases, but posts them because he thinks
that they will be of interest to the people reading this group.  I
would hate to see Toby stop participating because people keep flaming
him personally for Hayes' actions.

>I will say, though, that the software bundled with the Hayes
>is PITIFUL.  Horrible horrible horrible!

Bundled software usually is.  I actually wish modem makers would stop
bundling commercial software with their modems -- it just makes the
modem cost more, and doesn't do anything for the people who don't run
MS-DOS or already have software.  Supra seems to be doing one thing
right in this regard; you can get a Supra V.32bis FAXmodem with PC
software, with Mac software, or without software entirely.

-- 
Marc Unangst, N8VRH         | "Of course, in order to understand this you
mju@mudos.ann-arbor.mi.us   |  have to remember that the nucleus of the atom
                            |  is squishy."
                            |    -W. Scheider, from a Physics lecture
From: Arthur@cswamp.apana.org.au (Arthur Marsh)
Newsgroups: comp.dcom.modems
Distribution: world
Subject: V.42bis over V.120? (was Re: Can V.32bis or V.42bis be 'faked' by
Date: Thu, 31 Dec 1992 17:55:34 +1000

On Fri 25 Dec at 23:50 Christian Weisgerber wrote: 

 CW> Is V.42bis already defined by the CCITT for use over V.120? 
 CW> I though it was still in the "we're looking into it" 
 CW> stage, which can turn out anything.

The error correcting procedure of V.120 is an allowed error correction
procedure for V.42bis, but until V.42bis is revised, there is no defined method
of negotiating V.42bis parameters in V.120. (The other allowed error correction
protocol for V.42bis, LAPM has an XID defined for exchanging V.42bis
parameters).

So, V.42bis for V.120 is allowed and it's at the "we're looking into it"
stage.

 * Origin: Camelot Swamp MJCNA, Hawthorndene, Sth Australia (8:7000/8)
From: birchall@pilot.njin.net (Shag)
Newsgroups: comp.dcom.modems
Subject: Re: Practical Peripherals (modems and fax-modems) ?
Date: 30 Dec 92 07:42:15 GMT
Organization: Screaming in Digital, the Queensryche Digest

ajayshah@almaak.usc.edu (Ajay Shah) writes:

>Does their 14400 fax/modem work well with the free fax software?

I finally loaded in the fax software and tried it out (late-night request
to the local radio station... after all, that IS what faxes are for, right?)
and it worked like a charm.  2 pages sent, class 1 fax, v.29 @ 9600 baud,
55 seconds.  Nice.

-Shag

-- 
Shag                    | Operator, ShagNET | Editor of "Screaming in Digital" 
birchall@pilot.njin.net |  Rutgers / NJIN   |  The Queensryche E-mail Digest 
birchall@njin.bitnet    | dialup access for | queensryche-owner@pilot.njin.net
shag@most.other.places  | Burlington County | Anything Queensryche, every week
Newsgroups: comp.dcom.modems
From: forb0004@student.tc.umn.edu (Eric Forbis )
Subject: Why get _external_ Digicom Scout+ ???
Organization: University of Minnesota
Date: Wed, 30 Dec 1992 00:18:51 GMT

I noticed in a post (that I don't seem to be able to find) here a 
suggestion to get an external modem. Doesn't make much sense to me; what's 
the difference other than having an external display of current modem 
conditions? If nothing else, the lack of an UART in the external models is a 
strike against them; chews up an external serial port. I've got plenty of 
expansion space in my Zeos 386, but only 1 extra serial port. Of course, not 
many other things seem to need that port...

Does the Digicom Scout have problems on dirty lines? Does the Qmodem program 
include the mail program OLX? 
---------

Eric Forbis      forb0004@student.tc.umn.edu
From: jbuhler@owlnet.rice.edu (Jeremy Daniel Buhler)
Newsgroups: comp.dcom.modems
Subject: PPI upload trouble
Summary: How to upload at v.32bis with Ymodem-G?
Keywords: PPI upload Ymodem-G problem
Date: 29 Dec 92 19:05:26 GMT
Expires: Mon, 1 Feb 1993 06:00:00 GMT
Organization: Rice University

Hi all.  Thanks to everyone who helped set me straight on uploading to the
local Internet machine.  Now for round 2...

I have had considerable trouble uploading to some local HST/DS's and such
using Ymodem-G.  The transfer either does not send the initial NAK to me,
or I get a few errors and an abort.  Zmodem on the same connection works
just dandy and gives me NO errors at all.  This problem has come up on 
several modems, which makes me think my end is at fault.

Here are my local stats:

ACTIVE PROFILE:            DTE:57600      DCE:14400     PARITY:NONE
B16 B1 E1 L2 M1 N1 T Q0 V1 W0 X4 Y0 &A0 &B1 &C1 &D2 &G0 &J0 &K3 &L0 &Q5 &R0 &S0
&T4 &U0 &X0 &Y0
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:050 S08:002 S09:006
S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S30:000 S36:007 S37:000 S38:020
S43:011 S46:002 S48:007 S63:000 S82:128 S86:000 S95:000 S97:030 S108:1 S109:062
S110:2 S118:001 S119:1

The connections, in summary, are v.32bis, LAP-M, v.42bis, port locked at 57600.

Oh, funny stuff: when I lose the Ymodem-G upload, the error is invariably
"Sender aborted".  Don't look at me - I didn't even touch it :-)!!

The modem is a PPI 14400FX (internal) w/1.15m ROMs.  the 16550 UART is being
used, of course.  The software is Qmodem 4.52TD, which has an internal Y-G.

								Jeremy


-- 
<      Jeremy Buhler        * In real life: jbuhler@owlnet.rice.edu >
< Rice U., Houston, TX, USA * Ceci n'est pas une .sig - zut alors!  >
< All opinions expressed herein are my own and should not be in any > 
<     way construed to represent the views held by Jeremy Buhler    >
From: vporguen@unlinfo.unl.edu (victor porguen)
Newsgroups: comp.dcom.modems
Subject: Re: Could somebody tell me the quality of Zoom Modems?
Date: 28 Dec 1992 04:18:46 GMT
Organization: University of Nebraska--Lincoln	
Distribution: world
NNTP-Posting-Host: unlinfo.unl.edu

matttrem@willard.UUCP (Matthew Trembley) writes:

>I'm thinking of upgrading to a 14.4 Zoom modem with all the kinds of 
>compression and correction(internal).  It also faxes.  It says that it
>has 16550 UART and speeds up to 57,600 bps.
>It is for sale for $219.  
>Could someone tell me if this is a good deal and if the modem is of good 
>quality?
>Thanks in advance.

Yes, I can tell you something about Zoom modems, although I certainly 
haven't seen ALL of them. However, based on my experience with them,
my advice would be to stay away from it. The modems have problems and
it's not easy to reach their Tech Support OR their Warranty Service
people - you always get an answering machine, it seems. I didn't like
that very much, nor did I like the problems that the modem itself was 
having.



>-- 
>matttrem@willard.UUCP (Matthew Trembley)
>gatech!vdbsan!willard!matttrem
>emory!uumind!willard!matttrem
>Willard's House BBS, Atlanta, GA -- +1 (404) 664 8814
Newsgroups: comp.dcom.modems
From: tad@ssc.com (Tad Cook)
Subject: Bad Experience Seeking 2400 bps, v.42bis
Organization: very little
Date: Tue, 22 Dec 1992 08:26:53 GMT


Recently a friend wanted advice on getting a cheap modem, and I
recommended getting one with 2400 bps, V.42bis and MNP5.  I checked
Computer Shopper, and found a ZOOM AMC for only $46 that had
what we wanted.  He already has a fax machine, and does not
want fax.

The modem came the other day, and guess what?  Its really
just a 2400 bps modem, but has small print below the V.42bis
on the label that says "RPI compatible," meaning that you
have to do your error correction and compression in
software external to the modem!  I had heard of this before,
but didn't know that Zoom was trying to pull this scam.

So I checked around and have found a number of ads from various
mailorder places for this modem, and none of the sellers seem
to be aware of the difference between true V.42bis and
"RPI compatible."

Now I'm wondering if I can EVER tell for sure in advance whether
any of the cheap modems that I see advertised might just
be plain 2400 bps, but advertised as something more.

Both Telemart (the outfit we got this from) and Midwest Micro
are carrying this modem.

Anyone have any current recommendation for a cheap internal
modem that does true V.42, V.42bis, MNP5 at 2400 bps,
including where to buy it?


-- 
 Tad Cook     |  Phone:  206-527-4089  (home)     |   MCI Mail: 3288544   
 Seattle, WA  |  Packet: KT7H @ N7DUO.WA.USA.NA   |   3288544@mcimail.com 
              |  Internet: tad@ssc.com           or...sumax!ole!ssc!tad
From: junglee@gandalf.rutgers.edu (Jung S. Lee)
Newsgroups: comp.dcom.modems
Subject: Need help on setting up Zoom v.32bis fax internal modem
Keywords: internal Zoom v.32bis fax modem
Date: 26 Dec 92 21:21:11 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

Dear netters:

I bought Zoom v.32bis internal fax modem in Nov. The problem is with setting
up com port for it. I have I/O card with 2 serial ports, 1 game port
and 1 parallel port. I have only a mouse on com port 1. So I set up
com port 4 for the modem, and it works perfectly at the first time.
But after the first, it doesn't work at all. It says that the com port
is unavailable. So I try to disable com port 1 and set up com port 3
for the modem(move a mouse to com port 2). When I type AT, it gives me
OK but when I dial to school system, it gives me no toneline error or
something like that.  In this morning, when I turned on my computer,
now it gives me HD controller failure error(I have an ide controller,
and it didn't give me any probelm before installing the modem). 

Could you please help me out here? 

Thanks in advance.

Jung

P.S. I have taiwan made 386DX upgradable to 486DX with 8 1 meg by
3(there is only three chips maybe four) simms running OS/2 and DOS
right now. The cards I have on the MB is paradise 16 bit card, AT type
ide controller, the zoom modem and I/O card. I just got the
motherboard two days ago.
From: brian@osl.or.gov (Brian McBee)
Newsgroups: comp.dcom.modems
Subject: Whats the cheapest way to do Async leased line?
Date: 21 Dec 92 19:39:17 GMT
Article-I.D.: osl.1992Dec21.193917.14962
Distribution: usa
Organization: Salem Compass, Oregon State Library, Salem OR

I have an application coming up where I need to do Async IP over leased
lines. It needs to be cheap both for the equipment cost, and for the
recurring monthly cost.  I have in mind getting 2-wire analog service, 
and using something like the Zyxel at 16.8K with compression. Does anyone
have any faster/cheaper/better ideas?

Should I do CSLIP or PPP?  Which has the lowest overhead?


-- 

----- Brian McBee ----- (503)378-4276 ----- brian@opac.osl.or.gov -----
----- Oregon State Library, State Library Building, Salem, OR 97310 -----
Above opinions are mine only.  You can have them if you like.
From: birchall@pilot.njin.net (Shag)
Newsgroups: comp.dcom.modems
Subject: PPI Usage & 1.21 ROMs (Re: PPI Modem...)
Date: 29 Dec 92 06:31:58 GMT
Organization: Screaming in Digital, the Queensryche Digest

Rick_Engel@mindlink.bc.ca (Rick Engel) writes:

>... I've had the modem for a while now and its used at least three hours
>per day and no problems have been encountered yet. I did get the rom upgrade,
>'just in case', and the service was FANTASTIC, I called the service dept and
>2 days later I had my new rom installed. 

Two things:

1) I'm somewhat curious as to what sort of usage people subject their PPI's
	to.  I've had mine since early June, and usually use it at least 8
	hours a day (that's 8 hours of actual online time, not just turned
	on), frequently more than 12 hours in a day.

2) Does anyone know exactly what the 1.21 ROM upgrade is supposed to improve,
	revise, fix, tweak, whatever?  I received and installed it today, but
	I don't feel like calling PPI to ask them (or read their BBS :)

[Doesn't _cause_ any problems, at least.  I have a spare 1.15m just in case ;)]

-Shag

-- 
Shag                    | Operator, ShagNET | Editor of "Screaming in Digital" 
birchall@pilot.njin.net |  Rutgers / NJIN   |  The Queensryche E-mail Digest 
birchall@njin.bitnet    | dialup access for | queensryche-owner@pilot.njin.net
shag@most.other.places  | Burlington County | Anything Queensryche, every week
Newsgroups: comp.dcom.modems
From: mckeeveb@monashee.sfu.ca (Gumby - The unknown user)
Subject: FAQ for ZyXELs, etc.
Summary: Offer to maintain a FAQ for ZyXEL modems
Keywords: FAQ ZyXEL modem
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Thu, 24 Dec 1992 19:20:10 GMT

Hi y'all,

First, Merry Christmas! (And a happy new year...)

Now, remembering seeing a few posts in the past regarding a FAQ either for
this group or ZyXEL modems in particular, I got to thinking...

Is there such a FAQ already in existance?  If not, I'll volunteer to maintain
such a beast.

So, unless I hear that either there already is one, or someone else has one
in the works, I'll start collecting various tidbits for one.

Feel free to mail me with any you feel should be included.

-- 
    Rob McKeever  VE7ICJ  rmckeeve@sfu.ca  mckeeveb@sfu.ca  604-291-0457
"Do you know what standards are?  They're career paths for people who don't
 want to work!" - John Parkinson, Ernst & Young at the BCDMA Conference '92
       -*-          Standard Disclaimers should be adequate        -*-
Newsgroups: comp.dcom.modems
From: mrosen@nyx.cs.du.edu (Michael Rosen)
Subject: Re: GATEWAY TELEPATH @ $1
Organization: University of Denver, Dept. of Math & Comp. Sci.
Date: Tue, 29 Dec 92 16:06:29 GMT

john.navas@uttsbbs.uucp (John Navas) writes:

> > Wonder if I even want to give them any business *EVER*...

>It is indeed a stupid practice.

Sure, it may seem like a stupid practice not to sell to non-Gateway
customers but it certainly isn't illegal.  Especially since they are
out in the open about it.  It would be different if they advertised
these items and didn't have any disclaimers stating this fact.  There
was a case recently reported in PC World about some company selling CD
Rom bundles but not being very clear in their ads that you had to buy
a CD Rom machine from them.

Mike
--
Michael Rosen						"Time and space
Tau Epsilon Phi - George Washington University		 can be a bitch."
mrosen@nyx.cs.du.edu					  -Quantum Leap
Michael.Rosen@bbs.oit.unc.edu or @lambada.oit.unc.edu
Newsgroups: comp.dcom.modems