> Once upon a time Jacob Suter shaped the electrons to say...
> >Will Stac compression work on low speed sync lines too (ie - 56K,
> >frac-t1's, etc?)
>
> Technically yes - just negotiate CCP during PPP.
>
> Officially we are committing to it on OR-ISDN units and the PM-3 for ISDN.
>
> We plan to evaluate it on OR-SYNC units and the PM-3 for leased lines.
> We expect that at some point the clock speeds would be too high for
> compression to be efficient. So *if* we do it, it will likely auto disable
> itself when the line speed goes above a certain level.
>
> Ie, it makes some sense on a 64K or 128K line - but NOT on a full T1.
>
OK I just don't get it! Lets say you get an average of 2:1 compression
using compression on a TCP/IP connection. Why would you _not_ want 2:1
compression on a T-1 link? Whats the alternative - get another T1
circuit?
So lets take a real world example that an ISP might relate to. You put a
PM3 out as a POP with 2 PRIs. So you have 23 * 2 = 46 B-channels
available. If you use compression you could uplink the data to your
central location using 1/2 the B-channels from the 2nd PRI - assuming that
all your users are ISDN users. So you now have 12 channels of the 2nd PRI
carrying traffic you can bill for. Now I know this is not a full T1 link,
but you see the economic benefits of compression?
Everyone pays for bandwidth. Anything that lets you shove more bits down
a given pipe (compression) is a good economic deal. And this is
independent of the size of the pipe - right?
Al Hopper Logical Approach Inc, Plano, TX. al@logical-approach.com
(972)-379-2133 or (972)-849-5765. Fax 972-379-2134