The Modem Cannot Connect; When Answering; Slow File Transfer - Black Box Mini-Modem MD1620A User Manual

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
3.7.5 T
M
HE
ODEM
• Auto-answer may be disabled. Turn on auto-
answer in your datacomm program or send the
command ATS0=1 to your modem in terminal
mode.
3.7.6 S
F
LOW
ILE
• You may have an older UART. For best
throughput, install a 16550FN or higher UART.
• If you are running under Windows 3.1 and have a
16550AFN UART, you must replace the Windows
serial driver, COMM.DRV, to take full advantage
of the UART's speed.
• If you are using a slow transfer protocol, such as
Xmodem or Kermit, try Zmodem or Ymodem/G
instead.
• Is your line noisy? If there is static on your line,
the modem has to resend many blocks of data to
insure accuracy. You must have a clean line for
maximum speed.
• Are you downloading a compressed file with
MNP5 hardware compression enabled? Since
hardware data compression cannot compress
54
C
C
ANNOT
ONNECT
T
RANSFER
W
A
HEN
NSWERING

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