Re: PM3 digital modems SLOWER than analog? (fwd)

MegaZone (megazone@livingston.com)
Mon, 14 Apr 1997 13:58:34 -0700 (PDT)

Once upon a time Jordan Mendelson shaped the electrons to say...
>We've seen a lot of posts about latency issues and what not on the PM3,
>but I have yet to see a response from Livingston. With the introduction of

I've replied to it a few times - check the archives.

>any testing been done on the PM3's latency/speed as compared to other
>products? Personally, I always thought a 160 ms ping time was good, but

1. The current modem code does NOT officially do anything over 28.8.
Anything higher is purely test/development. The next modem rev should be
33.6 and out testing shows it is faster.
2. The V.42bis dictionary is 1/4 the size of what most modems have. This
has a varying impact on total transfer rates - we're slower because we
don't compress as efficiently. The code in testing has the full size
dictionary.

In testing the new code holds it's own, can can beat, USR Couriers.

>Oh, and what's going to happen with the OLD modem cards? Bargain basement
>sale or garbage heap? [if the later, if you see someone about 5'8

They will be phased out, after some number of code releases that support
both support for the old cards will be dropped.

-MZ

--
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