Extended at commands – IBM 2193 User Manual
Page 190
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B-10
IBM Personal Computer User Guide
Extended AT commands
Table 3: Extended AT commands
Command
Function
&C0
Carrier Detect (CD) always on
&C1
Turn on CD when remote carrier is present
&D0
DTR signal ignored
&D1
Modem returns to Command Mode after DTR toggle
&D2
Modem hangs up and returns to the command mode after DTR toggle
&F
Load factory default configuration
&G0
Guard tone disabled
&G1
550 Hz guard tone enabled
&G2
1800 Hz guard tone enabled
&V
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