11
8. Plug one end of a second modular telephone cable into the jack
labeled LINE on the 5556 and the other end into the wall telephone
jack.
9. Power on your system.
10. Set the communications speed of the 5556 to baud rates up to 56K
BPS. The 5556 defaults to 56K BPS when first powered on. Also set
the character length, parity and stop bits. Refer to your software
manual for more specific information.
Note
Be sure that the settings you select for the 5556 are compatible with
the remote modem you are accessing.
11. To verify the 5556 is on–line and working correctly, select local or
terminal mode on your software program. Type:
AT <Return>
An OK message displays. If you do not receive this message:
n
Make sure that the speed setting is 56K BPS in the
Communication Program
n
Make sure your software program is set for an AT modem
n
Also refer to the
Troubleshooting
section
AT commands
Introduction
The 5556 Modem Card is AT command compatible. To use the 5556
modem, you must have access to some type of communications
software. When selecting a communications software program be
sure that it supports the basic AT command set.
Operating modes
All modems operate in two modes — command and on–line modes.
When the modem is in the command mode, it will accept all AT
commands. The modem only returns result codes when in the
command mode.
The modem is in the on–line mode when it has successfully
connected to another modem. In the on–line mode, data sent to the
modem from your system is transferred directly to the remote
modem and data received from the remote modem is transferred
directly to your system.
