AT&T MERLIN LEGEND Release 2.0 Data User's Manual page 44

Making and Answering Data Calls
You can also use a System Speed Dial code. If you use the previous
example but replace the dial-out code and telephone number with
the system speed dial code 600, you would enter:
5.
Press
6.
Use the instructions supplied with your modem or data
communications software to send data, receive data,
and disconnect the call.
Making Analog Data Calls
3-12
.
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