IBM 56K Modem Installation Manual page 49

other factors. Uploads from users to server equipment travel at speeds
up to 33Kbps. An analog phone line compatible with the V.90
technology, and an Internet provider host site compatible with the V.90
standard technology are necessary for these high-speed downloads.
Refer to Chapter 2 of the users manual for more detailed information
about 56K modem technology. Call your ISP to verify they support
V.90 or X2 protocols.
Possible Solution
You may have devices between the modem and the phone jack. There
should be no line splitters, fax machines, or other devices between the
modem and the wall jack.
Possible Solution
Check the IBM web site for the must current version of drivers
available:
http://www.pc.ibm.com/options/modems/56kmodem.html
Problem
Errors are constantly occurring in your v.17 fax transmissions
Possible Solution
There may be a Terminate and Stay Resident (TSR) program (such as
a screen saver or virus scanner) running in the background, disrupting
data communications. Disable any Terminate and Stay Resident (TSR)
programs running in the background. If you have software running as a
TSR, check the software's manual for information about disabling its
ability to operate as a TSR.
Possible Solution
Your baud rate may be set too high. In your communications software,
lower the baud rate to 9600, 7200, or 4800.
Possible Solution
You may be trying to fax a compressed file. Decompress the file using
the application with which it was compressed. Then open it in the
application with which it was created. Select your fax software as the
printer and then print the file.
Possible Solution
Your modem initialization string may be insufficient for fax
transmissions. In terminal mode, type the following initialization string:
AT&H3&I2&R2S7=90S36=0 then press ENTER. The standard string
for faxing is AT&F1S36=0.
6-6
56K Modem Internet Kit