From: johnn@eskimo.celestial.com (John Navitsky)
Newsgroups: comp.sys.amiga.datacomm
Subject: Re: fast modems!!
Keywords: which are best?
Date: 23 Jul 92 16:24:20 GMT
Organization: =>ESKIMO NORTH (206) 367-3837 SEATTLE, WA.<=

In article <14ifd7INNbe3@darkstar.UCSC.EDU> jonathan@cats.ucsc.edu (Jonathan Cano) writes:
>
>I just graduated (with a B.A.) and got a job in which I expect
>to be doing a bit of work over the modem.  I've ecked out an
>existence as a student with a 2400 baud modem but now I'm ready
>(to spend $$$) for the big guns ;^). 
>

I've found that v.32 modems seem to work well for terminal emulation.  In fact
I use a modem at my desk quite often and don't notice a large difference vs.
my directly connected terminal.  (or course our terminal servers are not
great)

>I'd like to hear from people about which (fast - 9600 baud or better) 
>modems you like and dislike.  I'm more interested in external modems 
>because it would be easier for me to sell it or give it away when I 
>want to get another, but I'd also like to hear about any high performance
>internal modems too.

My vote for the Telebit WorldBlazer.  Telebit has well thought out modems
that are very reliable.  The WorldBlazer is their newist that has all the
v.32bis stuff plus their own TurboPEP protocol.

>
>What sort of workload would downloading at 9600 bps+ put on my 68000
>powered A2000?  I typically download to a ram disk (I have 5 megs
>of ram).  Do some telecom programs have problems at high bps (I use
>VLT)?

I've gotten about 1050 bps sustained throughput on my 386 at work with zmodem
and crosstalk for windows on a v.32 modem.  my amiga seems to be closer to
800ish but I have never really gotten zmodem to work well.  I typically use
handshake and term. (actually I've given up on term until I get some more
memory - only have 1 meg and are using the 1 meg display chip - term has a
tendency to not fit well :-(  )

>
>please include as much technical information as you can about the
>modems you discuss -- e.g. MNP2-5 or v.42 bis compression, price, 
>support software if any (amiga software preferable :^), size ...
>

WorldBlazer (from their litature):

TurboPEP for asynchronous throughputs up to 23,000 bps without compression
(supports normal PEP as well)
Fully V.32bis, v.32, v.22bis, v.22, v.23, v.21, bell 212/103 compatible
Supports DTE speeds of up to 115,200 bps
CCITT V.42 and PEP error correcting protocol support for error free transmission
V.42bis and MNP class 5 data compression yields data rates in excess of 70 kbps
Asynchronous and synchronous operation
Supports remote configuration and diagnostics
provides password and callback security
PTT type approved for connection to the telephone network
Internal support for UUCP, kermit, xmodem and ymodem

The unit is 2.4" (h) x 8.5" (w) x 13" (d)
 (it's a fair sized unit but i've found that they stay very cool and stack
  very nicely - althought they do have a rack mount version)
power requirements .55amp max
operating temperature 50f to 120f
storage temp -40f to 149f

receiver sensitivity -43 dBm
transmit level -9dBm default; 0 to -15 dBm

The list price is $1099

>   I look forward to your replies,
>   --Jonathan
>
>P.S. please respond by posting, unless this subject has been overworked
>recently in which case please respond by email.
>
>-- 
>============================================
>| Jonathan Cano             |     //   _   |
>| jonathan@cats.ucsc.edu    | \\ //   (_)  |
>| 8kyu (+- 2kyu)            |  \X/     |<  |
>============================================

Good luck!

  -john


-- 
-------------------------------------------------------------------------------
  John Navitsky                        e-mail   johnn@eskimo.celestial.com
                                               johnn@locke.hs.washington.ed
-------------------------------------------------------------------------------
Newsgroups: comp.sys.amiga.datacomm