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Placing ISDN Data Calls 6-2
Placing Calls Automatically
If you are using standard communications software, select
the 3ComImpact IQ ISDN modem. If the 3ComImpact IQ
ISDN modem is not listed, select a Hayes
®
-compatible
modem configuration and dial out through the 3C882 ISDN
modem. If you are using a Hayes-compatible modem
configuration, you may have to manually configure settings
such as baud rate. Refer to your communications software
documentation for more details.
Placing Calls Manually
You can place calls manually using AT commands. Your
communications software must be in terminal emulation
mode.
Follow these steps to use AT commands:
In most situations, an initialization string is not necessary
with the 3C882 ISDN modem. If an initialization string is
required by the communications software or server, use the
Hayes default initialization string.
1 Launch your communications software.
Be sure your communications software is in terminal mode.
2 Be sure the 3C882 ISDN modem is in command mode
(sometimes called local mode or terminal mode) so that it
interprets your commands.
When your computer is powered on, the 3C882 ISDN
modem automatically starts in command mode. If you have
recently used the 3C882 ISDN modem to make a call and
have not yet disconnected, type +++ to switch to command
mode.