IBM 8285 Nways, Installation And User Manual

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1. Plug one end of the RS-232 cable into the 25-pin Console port on the front panel of the Base Unit.
For the exact position of the Console connector on the Base Unit, see Figure 2 on page 5.
2. Plug the other end of the cable into the appropriate connector on the modem.
Modem Requirements
The ATM Workgroup Switch supports the use of dial-in modems with the following requirements:
Ÿ The modem must be 100% Hayes-compatible.
Ÿ Any valid baud rate (300, 1200, 2400, 4800 9600, 19200) may be used. 2400 and 9600 are
recommended.
Ÿ The modem must be set to Dumb/Auto Answer mode.
Modem Attachment
The RS-232 modem cable (Part Number 6323741) is a standard 25-pin female-to-male cable, three
meters (10 feet) long.
After connecting a modem to the to the Console connector, configure the modem by following the
procedure in “Modem Requirements.”
Modem Configuration
To configure a modem, enter the following commands from the console to which the modem is attached:
1. Type at&F and press Enter (to restore the factory default settings).
2. Type at&dð and press Enter (to ignore changes in DTR status).
If you have enabled automatic modem hangup with the SET TERMINAL HANGUP ENABLE
command and want to keep this setting, enter
at&d2 and press Enter. This sets the DTR parameter
so that hangup remains enabled when DTR switches from ON to OFF.
3. Type atsð=1 and press Enter (to auto-answer on the first ring).
4. Type
atsð?
and press Enter (to verify the auto-answer if 001 is returned).
5. Type atq1 and press Enter (to ignore the result codes).
6. Type
at&W
and press Enter (to save the configuration changes).
7. Type at&Y and press Enter (to define the configuration as the new default).
8. Set the modem to Dumb mode (with command recognition disabled) by following the instructions in
the modem's user guide.
An example of an IBM 7855-10 modem configuration is shown in Figure 45 on page 198.
Appendix B. Cables, Pins and Connectors
197