kurt@pnet51.orb.mn.org (Kurt Sletterdahl) (12/18/90)
Here is a portion of an advertisement from the manufacturer of
CCITT V.32bis modems: "Only [Brand Name]s give you [Proprietary
Feature] to keep you at maximum speed. You'll notice the
difference the first time you dial. Modems with [Proprietary
Feature] connect up to three times faster than other V.32bis
modems. That irritating, expensive wait for the connection is
over." *** All modems have to slow down for line noise. But two
high speed [Brand Name]s working together will speed up again
when line conditions improve. All other modems leave you stuck
in "low" for the rest of the transmission."
Is it correct that CCITT V.32bis includes "fall back" but no
"spring forward"?
(I was previously under the impression that CCITT V.32bis
included "spring forward", as part of "rapid rate
renegotiation".)
If the above mentioned proprietary features result in faster
connections and faster transfers, why weren't they included in
CCITT V.32bis?
(After all, these features are the creation of a CCITT member,
and proprietary features seem contrary to the intent of the
CCITT.)
Thanks in advance for your comments!
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INET: kurt@pnet51.orb.mn.orgbob@MorningStar.Com (Bob Sutterfield) (12/26/90)
In article <3637@orbit.cts.com> kurt@pnet51.orb.mn.org (Kurt Sletterdahl) writes:
(After all, these features are the creation of a CCITT member, and
proprietary features seem contrary to the intent of the CCITT.)
Why not? So long as they're backward compatible - that is, so long as
<proprietary products> still interoperate with any product that's only
standards-conformant. Additional features that are usable only
between <proprietary products> are added value for users of those
products, and filler for more sales presentation slides :-)