:people on this list is that what's prohibiting using 56K with the PM2e
:is that 56K requires the use of "digital phone lines". Prior to the PM3,
Yes because of the way PCM modems work. Basically it is easier to control
the flow of data in 1 direction at the higher speed if the connection from
the CO to the ISP (called station), is a full 8k. The way pcm works is by
sampling the wave 256 times and approximating it. Then symbols are built
based on those approximations. You cannot sample a wave 256 times on
conventional phone lines because you only have 4000hz frequency range, and
some of that is eaten up with guardband ranges.
:I've never tried, but since I still have the one PM2e using a CT1 off of
:the Adtran, would I be able to circumvent analog problem if I were to
:install 56K external modems to this pm2e?
No.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
Jake Messinger, VP. ph:713-772-6690 Lucent Dealer
AMS, Inc. fx:713-774-3498 Medical Billing
8300 Bissonnet #400 jake@ams.com , ICQ# 4403734 Internet Services
Houston, Texas 77074 www.ams.com/~jake and Hardware
Adjunct Professor University of Houston, CBA jake@uh.edu
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
INVENTOR OF the _.,-*~' '~*-,._ SQUIGGLES (c) 1978
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