Re: (PM) STAC compression card

Josh Richards (jrichard@livingston.com)
Wed, 20 May 1998 17:07:10 -0700 (PDT)

On 14 May 1998, Raymond Jolin wrote:

> I am using several PM3s as a dial-up pool for all of our analog customers.
> A total mix of all types of modems. I have channelized T1 DMS-5ESS switch
> and currently have 5x10 56k modems with the STAC compression cards in each.
> I'm running ComOS 3.8b13 with no complaints. I love Livingston portmasters.

What's a "DMS-5ESS" We must have some new alliances that I was not aware
of.. ;)

> Here is my question. Will I do better using ComOS 3.8b15 without the STAC
> cards? I ran b15 for a week with the cards in and received many complaints,
> mainly from 33.6 modem customers who though connected at 28.8-31.2 they
> would timeout on html pages. They seemed to not have any throughput. So I
> went back to b13 now of course my v.90 users are screaming cause they loved
> the great speeds they were getting (46-50K). Does the STAC cards benefit
> my non ISDN customers?

Yes it does, if they have STAC support and it is enabled on their end.
Windows 95/NT has support for it (with the latest service packs and
updates). Most likely the problems you are describing with 3.8b15, are
the modem issues I've mentioned over the last week with 3.8b15 that do not
exist in 3.8b13. I doubt STAC is your problem.

> If the STAC cards do benefit most of my users then how do I have users turn
> off the stac compression from their end, client side?

Turn of "Software Compression" in W95 to disable STAC.

> Or if this is a known problem and I should wait please advise cause I've
> been monitoring this maillist and have not seen anyone really with my
> problem SOooo I figured I just may have something I need to fix.

There is a known issue in 3.8b15 with certain modems. During the
integration of V.90 some older issues came back out which we are aware of
and correcting. Keep an eye out for another beta release soon, or fall
back to 3.8b13 would be my advice if this is affected a good number of
your clients.

-jr

----
Josh Richards - <jrichard@livingston.com> - <josh@lucent.com>
[Beta Engineer] - LUCENT Technologies - Remote Access Business Unit
<URL:http://www.livingston.com/> * <URL:http://www.lucent.com/dns/>

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