Re: (PM) V.42bis on 56K connection?

Russ Taylor (rtaylor@cmc.net)
Sat, 20 Jun 1998 12:06:14 -0700

On 6/20/98 11:18 AM, Joe Hartley (jh@metheny.brainiac.com) wrote

>The compression protocol of V.42BIS intrigued me - will either V.90 or
>K56Flex use this compression successfully?
>
>My guess as to how the protocols are named leads me to conclude that V.42bis
>is the compression part of a V.42 connection. If the connection protocol
>is _not_ V.42 but V.90 or KFlex, won't the connection go into conniptions
>if the compression protocol doesn't match? (And does this mean that we might
>see a V.90bis?)

v.42 is an error correction protocol, v.42 bis is a compression protocol.
v.42bis requires v.42 to function. All modern modems do v.42/bis
regardless of their connection speed -- v.32, v.32bis, v.34, and v.90 are
all examples of connection speed protocols, as opposed to error
correction or compression.

-- 
Russ Taylor (rtaylor@cmc.net, http://www.cmc.net/~rtaylor/)
The worst beating I ever got in my life is when my mom said
"I am sick" and I said "and tired" -- Bill Cosby

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