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GENERAL
This chapter describes commands used to select options and to operate
the modem. Some options depend on or are restricted by the mode of
operation.
COMMAND CATEGORIES
The modem offers eight major categories of command statements:
• Response
• Dial
• Answer
• Terminal Interface
• General
• Private Line
• Configuration
• Remote Configuration
Six other groups of AT commands are discussed in their respective
chapters:
• Protocol
• Test
• Security
• Fax
• S-registers
OPERATION MODES
During asynchronous operation the modem functions in one of three
modes:
• Offline Command Mode
• Online Command Mode
• Data Mode
V.3400
Chapter 5
AT Commands
5-1
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