The 3Com Impact IQ modem's very high data rates result from
3Com's implementation of IETF's standard CCP (Compression
Control Protocol) and Hi/fn LZS compression. With
compression, the modem can squeeze two B channels worth of
data onto one B channel. So, you get the best performance
for your money. (See the chart below for price/performance
comparisons.)
I know there is a STAC card for the PM3. Don't know if
there is one for the 2ER nor do I know if STAC is compatible
with the compression listed above, but this should point you
to the right questions ( and we all know that's half the
battle!).
Zak Wolfinger - zak@cyberlink.com
Systems Administrator - CyberLink, Inc.
(219) 235-1400, (219) 674-8279
-----Original Message-----
From: Timothy A. Deem <tdeem2@comsource.net>
To: support@livingston.com <support@livingston.com>
Cc: portmaster-users@livingston.com
<portmaster-users@livingston.com>
Date: Wednesday, February 25, 1998 4:34 PM
Subject: (PM) 3COM Impact IQ modem
>
>
>I have a customer using this 3COM Impact IQ modem which
boasts on the web
>page "http://www.3com.com/products/dsheets/400232.html" the
ability to run
>at a speed of 230,400 bps with data compression. Does this
capability
>exist when it connects to a PM2ER unit (ComOS 3.7) using
ISDN BRI-U
>modules...or is this a proprietary compression scheme
requiring it to be
>dialed into another Impact IQ unit? If it's available on
the PM2ER, is
>there a parameter that needs to be "turned on" or should it
just happen...?
>
>
>Thanks,
>Timothy
>
>-
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