[comp.dcom.modems] TB Plus to TB 2500

jeff@tc.fluke.COM (Jeff Stearns) (04/13/90)

In article <408@ohsuhcx.ohsu.edu> bj@ohsuhcx.ohsu.edu (Bill Jackson) writes:

:    Is anyone else having problems with Telebit Trailblazer Plus' not
: wanting to converse properly with Telebit T2500's?
: 
:   I have a Trailblazer Plus and I have a problem getting a reliable
: connection with UUNET.  If I use their 800 number, they tell me I will
: nearly always be connected with a T2500; the line runs very slow,
: alarms a few times and then drops.  If I call their toll number,
: apparently I will usually connect with something other than a T2500
: (it's PEP so I assume its a T2000 or TB+), then everything works fine.
: I tried some changes to undocumented registers suggested by UUNET,
: presumably from Telebit, and it made no difference.
: 
:    Seems to me that if this is a problem with TB+ <-> T2500
: communications, lots of other people would have seen it too, right?
: If so, whats wrong?  Is it the modem configurations, line quality,
: phase of the moon, or just plain sunspots?

I just spent a lot of time discovering exactly the same thing.
If I call uunet on their 800- number, I see the symptoms you describe.
If I call direct, things work swimmingly.

The folks at uunet have told me various things, the most believable being
that they are hearing other reports of this trouble on their 800- dialups.

They told me that they were suspecting Sprint, their 800- carrier.

What's interesting is how poorly the Trailblazers behave in this situation.
-- 
    Jeff Stearns        John Fluke Mfg. Co, Inc.               (206) 356-5064
    jeff@tc.fluke.COM   {uw-beaver,microsoft,sun}!fluke!jeff