Chapter 5

AT Commands

This chapter describes commands used to select options and operate the modem. Some options depend on, or are restricted by, the mode of operation. Appendix E provides a quick reference list.

Command Categories

The modem offers these major categories of command statements:

Response (page 5-5)

Dial (page 5-13)

Answer (page 5-16)

Terminal Interface (page 5-19)

General (page 5-22)

Private Line (page 5-33)

Configuration (page 5-37)

Remote Configuration (page 5-41)

Other AT command groups are discussed in these chapters:

Protocol (Chapter 6)

Test (Chapter 7)

Security (Chapter 8)

Fax (Chapter 9)

S-registers (Chapter 10)

Operation Modes

In asynchronous operation, the modem functions in one of these modes:

Offline Command Mode

Online Command Mode

Data Mode

Modem 3600

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Black Box 3600 MODEM manual Chapter AT Commands, Command Categories, Operation Modes