Re: (ASCEND) Ticket #802135 - Disconnect Problems on 4048 with 7.0.1

["Dave Joyce" <Dave.Joyce@rtc1.com>]

I've been seeing for a couple years that IF you put 3com equipment on both
ends everything works fine. BUT if you have non 3Com in the ISP and a
customer has 3com it is hit and usually miss that they get the benefit of
faster connect speeds. The funny thing is everyone points at the ISP at not
being compatible.

I had BayNetworks and I now have all Ascend equipment. Ascend is much easier
to manage and maintain even with constant 'free' updates. With Bay you had
to pay in both time to jump through the hoops and money (and it didn't
directly support radius).

Even reports from ZD's PC Magazine have said as much but they still get
Editor's Choice awards which drives the market for all those people who
don't know any better.

It is still best to recommend Rockwell based modems to customers who want to
connect at the faster speeds. There are many more companies selling Rockwell
but some of them are changing probably due to price and think it's ok we
have V.90. But I've also seen problems with V.90 in Rockwell based modems,
changing them back to K56 does seem to be one fix since the Max supports
both.

The other problem I've encountered in obtaining V.90 speeds is with the
phone company using carrier devices which they use when the dry copper is in
short supply. It allows them to use one copper pair and service multiple
phone lines. Unfortunately their an AtoD conversion involved.

And in the it's not just V.90 problem. I know of another ISP who has changed
from supporting 3com ISDN devices because they wouldn't connect properly to
Max either (but it didn't connect very good to a 3com Total Access either)

Just my 2cents worth.

Dave

-----Original Message-----
From: Kinchen, Tyler (NSTS.JAX) <TKincher@NA2.US.ML.com>
To: 'ascend-users@bungi.com' <ascend-users@bungi.com>
Date: Thursday, January 07, 1999 1:07 PM
Subject: RE: (ASCEND) Ticket #802135 - Disconnect Problems on 4048 with
7.0.1


> I have to agree with this.  There still appears to be
>incompatibilities in the V.90 code from manufacturers that used X2 or
>K56Flex.  And I guess the question has to be asked, will Ascend keep coming
>out with releases beyond 7.0.X for the MAX 4XXX that improves on the V.90
>code?  It sucks having to keep hammering your users about upgrading the
>firmware in their modems, not to mention the added support to assist them
in
>doing so.  We have been giving our users 3Com Sportsters and it's been rare
>that I've seen a connection with them above 33.6.  I realize there may be
>other factors involved, i.e. line issues but the example below and
>experiences I've encountered/heard don't bear that out.  I have also
>experienced positive results with the Courier v.everything modem connecting
>with our MAX.
>
>
>J. Tyler Kinchen
>Remote Access Group
>Merrill Lynch-Jacksonville
>@:tyler_kinchen@ml.com
>
>
> -----Original Message-----
> From: R. P. McCormick [mailto:RPM@GCQ.net]
> Sent: Wednesday, January 06, 1999 11:56 PM
> To: ascend-users@bungi.com
> Subject: Re: (ASCEND) Ticket #802135 - Disconnect
>Problems on 4048 with 7.0.1
>
>
> Yup.  Seen the same thing - actually first hand,
> at one of our folks residence.
>
> Situation: new telephone line, new Micron computer
> with USR Sportster modem in it.  Modem upgraded
> to v.90 (it previously was X2 only).
>
> Dialing into our 4048 boxes (we're fed with ISDN PRI's)
> the Max would answer, modem respond, tones forever
> until the line hung up.
>
> Same setup - but dial an ISP that's connected to the
> same switch and exchange our Max equipment is
> (they're using USR / 3Com) and the modem connects fine,
> in fact, with connections in excess of 33.6 kbps
> (i.e., either X2 or v.90 modulations).
>
> Disabling v.90 capabilities in the modem:
> it connects to our Max just fine ... albeit at low rates
> (24 kbps and below).
>
> Other modems (including Hayes and Zoom) were
> brought over and tested ... bit better with connects
> (at least they'd negotiate and make a connection)
> but the bit rate and throughput was poor ...
> these other modems worked fine connecting
> to the "other guys" with 3Com / USR.
>
> Upgrading the USR Sportster to the latest (stable?!)
> v.90 code made a world of difference: the modem
> would then connect when it previously had not ...
> and the connect rates were pretty similar between
> our Max'en and the other guys 3Com stuff ...
>
> But the connection quality still was extremely poor:
> lots of retrains and disconnections.  This was fixed,
> no - make that reduced/improved, by having the
> telephone company come out three times (at this
> residence) to re-engineer the line.
>
> Our experience has been that we've gotten the
> best connections with 3Com USR Courier
> v.everything modems ... followed by those units
> based on the Rockwell chipset (like the earlier Zooms).
>
> The remedy to problems like you mention above
> seems to be a combination of ensuring that the
> modem has the latest firmware in it, and ensuring
> that the phone line's quality is as best as it could be.
>
> Regards,
> Bob McCormick
>
>
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