Motorola 326X V.34 - Manual (Page 93)

Using the AT Automatic Calling Interface 5-1
Using the
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Chapter 5
Using the AT Automatic Calling Interface
Contents
Introduction .................................................................................................. 5-2
What is the Attention (AT) Command Set? .................................................. 5-3
What Role Does Communications Software Play? .................................. 5-3
Using AT Commands ................................................................................... 5-3
Entering AT Command Lines ................................................................... 5-3
To enter a single AT command line: .................................................... 5-3
To enter multiple AT commands on a single command line: .............. 5-4
AT Command String Examples ........................................................... 5-4
For Further Detail on AT Commands .................................................. 5-4
Autobaud Feature ..................................................................................... 5-5
The Escape Sequence—(+++) ................................................................. 5-5
To use the escape sequence with guard time: ...................................... 5-6
Non-Configuration AT Commands .......................................................... 5-6
A/, Re-Execute Last Command ........................................................... 5-7
ATA, Manual Answer .......................................................................... 5-7
ATD, Dial ............................................................................................. 5-7
ATH, Hang Up ..................................................................................... 5-8
ATI, Display Software Information ..................................................... 5-8
ATO, Leave Command Mode .............................................................. 5-8
AT * RD, Redial Last Number ............................................................. 5-9
S-Registers ............................................................................................... 5-9
Displaying and Changing S-Register Values ....................................... 5-9
S-Register Descriptions ....................................................................... 5-10