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Date:      22 Jan 2000 20:31:11 -0600
From:      Soren Dayton <dayton@overx.com>
To:        "Majid Almassari" <majid@ibroadcast.net>
Cc:        "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.org>
Subject:   Re: Making a 56K Modem Pool
Message-ID:  <86d7qtiknk.fsf@polo.overx.com>
In-Reply-To: "Majid Almassari"'s message of "Sat, 22 Jan 2000 17:48:57 -0800"
References:  <015d01bf6544$086547e0$1791ddd1@balfourplace.com>

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"Majid Almassari" <majid@ibroadcast.net> writes:

> Soren Dayton <dayton@overx.com> wrote in message
> news:86u2k5io06.fsf@polo.overx.com...
>
> > Does someone know what's going on here (or know of a pointer to that
> > kind of information)?  I just don't understand what the issues are,
> > and I'm going to need to understand these to buy new modems, phone
> > lines, etc.
>
> Unfortunately there is nothing that you can do about it except calling the
> phone company and complain about noise so they can dispatch a technician to
> check the wiring in your location at least. Remote testing based on Signal
> to Noise ratios are not that accurate anyway. There might be wiring problems
> in your location that a phone tech can determine (like a cross-over
> wiring-Phone guys know this better that I do?). If everything is OK then you
> are basically limited and need to switch to a different Technology such as
> ISDN, XDSL, Cable,...etc.

Hmm.  Either I don't understand your answer, or I asked the question
badly.  The setup is two analog modems talking to each other.  Both
can separately achieve ~51k connections on their respective phone
lines to various 56k services (such as USR's 56k test line and various
Chicago ISPs).  However when connecting to each other, they always get
33k.  One explanation is that one is configured to max out at 33k in
one direction.

The USR/3com guy said, basically, that this is true.  BUT also that
there are funny protocol issues that require that one of the modems be
in a "server mode" and speak a "server protocol".  And that these
kinds of devices only come in ISDN flavors (thus requiring digital
lines, etc)

So my question: is this true?  What's the story?  What are references
that I can look at?

Does this disagree with what you are saying?  Does it agree?  Did I
state the question clearly enough?

THANKS,
Soren


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