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1992-12-01
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27 lines
Most of the time, there is no need to use a bps above
19,200bps. Unless the data is very structured or has lots of
empty space (database or spreadsheet) the compression won't get
you over 19,200bps. When the modem refuses to work above 19,200
or doesn't work well, it is usually hardware on the computer
(slow serial port or some other conflict even on a fast
computer). Set the software and dialing directory for 19200. Make
sure CTS/RTS flow is=ON. And locked DTE (baud/bps) rate (software
does NOY follow modem connect speed).
On the other hand, never set the modem BELOW 19,200 either.
If you get a 12,000 or 14,400 connect the software and modem may
not speak to each other correctly.
The phone company claims the bandwidth of the phone lines
will only support 9600. Most of the time, from most locations we
know from experience that often 14,400 or 12,000 can actually be
acheived. However when the connections for whatever reason won't
support the faster speed, it should come as no surprise.
Sometimes you can force a higher than 9600 connect, and get some
(or a lot) of garbage characters. When the connect is TOO poor,
the modems will not even stay connected. In such a case use one
of the 9600 dial prefixes (insert or pp11-7 or 10-7).
Don Hinds - Zoom Tech
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