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Most popular communication software packages allow users to
specify a command string and the dialing prefix that is sent to the
modem prior to dialing telephone number digits. The dialing prefix
reconfigures the modem according to your commands.
Below are some examples of a dialing prefix string:
ATS0=3 Instructs the modem to auto-answer an
incoming call on the third ring.
ATX4DT9W Instructs the modem to first tone-dial the
number 9 and hold it until a dial tone is
detected.
ATS6=10DP Instructs the modem to wait for 10 seconds
before proceeding to dial.
ATM2L3DT Turns on the modem monitoring speaker at all
times, and uses high volume.
ATB0DT Uses the CCITT protocol to establish
connection with the remote modem.
AT&P1DP Pulse dials with the make/break ratio of 33/67
(for use in most European countries).
AT&P0DP Pulse dials with the make/break ratio of 39/61
(for use in the USA).
You may use any command or combination you need. Refer to the
chapters in this manual regarding modem commands for more
details.
1.10 Getting Started
Now, you can dial a bulletin board, data base, or remote computer.
Your modem establishes the connection automatically. Once there
is a connection, you can,
1) read or send electronic mail,
2) view up-to-date news or information,
3) upload or download computer programs,
4) transmit or receive a text message or spread sheet data, or,
perform whichever on-line data communication tasks you
require.
Note that the remote modem should be set to accept digital
loopback request by issuing AT&T4.