SYSV R4.0 High speed UUCP

[Ray Shwake]

witr at rwwa.COM (Robert W. Withrow) writes:

>Yes, and there is the rub.  My interpretation is that each modem
>manufacturer has implemented V.42/V.42bis slightly differently (this
>was the gist of a Byte review of these modems) leading to
>incompatabilities.  I know for a fact that I cannot do 9600 BPS UUCP
>using a Practical Periphials modem to a Telebit T2500 when using
>V.42(bis) LAP-M/compression.  If I turn off the V.42/bis stuff the
>transfer works OK.

	Ah, but are you using early T2500 or recent T2500? Telebit data
sheets for the original T2500 did not indicate V.42bis support, but only
MNP 2-5. Recent data sheets not only explicitly list V.42 and V.42bis
support but additional goodies like callback. Thus, if your modem insists
on running V.42bis/LAP-M when its counterpart insists it can't grok that
protocol, you're doomed to failure. 

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