NOTHING PUTS THE 14,400 SPEED OF V.32 BIS TO WORK FOR YOU LIKE A
   COURIER V.32 BIS WITH ASL!


     With a Courier V.32 bis modem, you can transmit at 14,400 bps, full
   duplex - that is both directions simultaneously. With V.42bis data
   compression, throughput can reach 38,400 bps. Throughput on a typical
   text file is about 35,000 bps.

     That's almost 50% faster than any 9600 bps modem on the market. And
   15 times faster than a 2400 bps modem without MNP. And a Courier makes
   optimum use of that speed. Only a high speed Courier gives you ASL
   -Adaptive Speed Leveling.  Modems have to slow down for noise. But
   when two courier V.32 bis modems are working together, they continue
   to monitor the line and speed up again the moment conditions improve.
   All other modems leave you in "low" for the remainder of the
   transmission. That can turn a one minute call into 5 or 10 minute
   call.

     Two Courier V.32 bis modems don't have to stop and then
   resynchronize every time they switch speeds either. There are (27 min
   left), (H)elp, More? ynone of those irritating pauses when you're at
   the keyboard.  Two courier V.32 bis modems train up in 3 or 4 seconds,
   instead of the typical 15. In polling applications, that can add up to
   significant savings. The Courier V.32 bis modem uses powerful Intel
   80188 microprocessors. Even with all the calculations involved in V.42
   bis error correction and data compression, it has the power to
   transmit simultaneously in both directions at 14,400 bps.

     A modem using the slower Z80s or 8031s can't handle that kind of
   load. You're not getting what you paid for. If you need compatibility
   with V.32 and V.32 bis modems from a variety of makers, the Courier
   V.32 bis has it. If you need international compatibility, the Courier
   V.32 bis gives it to you. The Courier V.32 bis puts you in high speed
   asynchronous communication with the wide world of PC's, minis, and
   terminals. And you get the synchronous communication you need for
   mainframes.

     Because it's full duplex, its also ideal for host-to- host
   communications or bridging LANs. With a Courier V.32 bis modem, you're
   not just getting high speed, You're getting high performance.



    What is v.32?  What's the difference between it and v.42?

The v.32 standard is a "modulation" standard.  I like to compare
it to the  AM and FM standards used  in radio broadcasting.  Not
only are they at  different frequencies but they use different
modulation techniques.  There are different modulation standards
for 300, 1200 and 2400 baud.  The v.32 standard is a full duplex
(data going both  ways simultaneously at the rated speed) standard
for 4800 and 9600 bps connections.

The v.42 standard is an error correction standard.  It is a method
by which data is packetized and sent between modems to ensure that
the data that arrives at the receiving end is the same as what was
transmitted.  It also includes the ability to compress data on the
fly to enable higher  throughput without requiring a different
modem modulation scheme.

MNP is another error correction standard.  In fact, the v.42
standard includes MNP as an "alternate" method in case a modem is
not v.42 compliant ..  in other words v.42 modems can connect with
MNP modems and achieve a "reliable" connection.
(26 min left), (H)elp, More?
A commonly asked question is if v.32 modems will work with v.42 --
and the answer is yes and no.  If you asked the question "can I
transmit ENGLISH over an FM RADIO FREQUENCY and have the listeners
understand" the answer would be the same and for virtually the
same reasons (comparing the v.42 method of packetizing data to
English and the v.32 method of modulation to FM).

The v.42 and v.32 standards are for two completely different (but
complimentary) areas of communication.  In fact, you'll most
likely discover that every v.32 modem you find has v.42, MNP or
some other kind of error correction control built into it.

So... a v.32 modem can talk to a v.42 modem -- if the modem on the
other end is a v.32 modem and if it can understand the v.42 method
of packetizing data (or the MNP method since MNP is included in
the v.42 standard).