[mod.telecom] UPTA 9600 baud modems

mgrant@TOVE.UMD.EDU (Michael A. Grant) (12/22/85)

Does anyone know anything about these modems?  They claim 9600 baud
over regular phone lines.  Anyone know how these things are over
long distances?  How about over alternate carriers, other than AT&T?
-Mike Grant
p.s. they go for $895

mgrant@TOVE.UMD.EDU (Michael A. Grant) (12/24/85)

Ok, here's the scoop:

I called them up.  It uses V.29.  It's software selectable for 4800,
7200, or 9600 baud.  It's full duplex, except, not really.  It has
about a 1 second timeout before switching directions.  It's $895 for
the IMB-PC version, $995 for a standalone RS-232 version.  She said
that it works fine over AT&T, but not so well over alterrnate carriers.

The ad apeared in Byte, Dec. 85, p. 74.

The address is:
Electronic Vaults, Inc.
12347-E Sunrise Vally Drive
Reston, VA  22091
(703) 620-3900

FTD%MIT-OZ@MIT-MC.ARPA ("David D. Story") (12/25/85)

Is what you're saying that the modem is really half-duplex but
with a one second timeout to simulate full duplex. For fast typing
that will not satifice. For a CRC run as a protocol on top they
would do well for a data tranfer modem. I will call and get teh techy
spec. Maybe get a trial modem  and link to one of their own sites/
Let's see what happens. Any other replies ?
Dave