Re: (PM) pm3 disconnects

Jon Ribbens (jon@oaktree.co.uk)
Thu, 25 Mar 1999 16:01:39 +0000

James Courtier-Dutton <dutton@livingston-ent.co.uk> wrote:
> ISDN PPP gives better performance than V.120, this is because V.120 adds a
> lot of overhead because V.120 is Async, and ISDN is sync.
> Doing Async over a sync line is not an easy task. You basically have to send
> a whole sync frame for each async character.

Does anyone have a good URL or ISBN for a reference to learn about what
all this actually means? What is the difference between "sync" and "async"
in this context? Why would you use PPP over ISDN and how does it work?
What's V110, V120 and X75? What do the different values for 'Line Speed'
mean in the PM3? (e.g. '64000', '64000/async')

Cheers

Jon

-- 
\/ Jon Ribbens / jon@oaktree.co.uk
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