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Chapter 4 - Manual Dial and Automatic Answer

Introduction ...................................................................................................................................... 36

4.2

Dialing/On-Line/Answering .............................................................................................................. 36

4.3

Manual Call Origination ................................................................................................................... 37

4.4

Automatic Answering ....................................................................................................................... 37

4.5

Manual Answering ........................................................................................................................... 38

4.6

Handshaking Details ....................................................................................................................... 38

4.7

Call Termination ............................................................................................................................... 39

Chapter 5 - Command Mode

5.1

Introduction ...................................................................................................................................... 42

5.1.1

AT Command Editing ................................................................................................................ 42

5.1.2

Functional Modes ...................................................................................................................... 43

5.2

Summary of AT Commands ............................................................................................................. 44

5.3

Result Codes ................................................................................................................................... 47

5.4

Dialing Commands .......................................................................................................................... 49

5.4.1

Dialing Action Commands ......................................................................................................... 49

5.4.2

Dial Modifier Commands ........................................................................................................... 50

5.4.3

Phone Number Memory Commands ......................................................................................... 53

5.4.4

Configuration and Default Storage Commands ........................................................................ 54

5.4.5

Command Response (Result Code) Commands ...................................................................... 56

5.4.6

Phone Line Conditioning Commands ........................................................................................ 58

5.4.7

RS-232C Interface Control Commands .................................................................................... 61

5.4.8

Error Correction Commands ..................................................................................................... 63

5.4.9

Flow Control Commands .......................................................................................................... 66

5.4.10 Compression, Error Correction, Flow Control, Pass-Through and Pacing Commands ............ 69
5.4.11 Speed Conversion Commands ................................................................................................. 70
5.4.12 Immediate Action Commands ................................................................................................... 73
5.4.13 Line Probe Commands (2834 Series only) ............................................................................... 75

Chapter 6 - S-Registers

6.1

Introduction ...................................................................................................................................... 78

6.2

Reading and Assigning S-Register Values ...................................................................................... 84

6.2.1

Examples of Assigning Values .................................................................................................. 84

6.2.2

Examples of Reading Values .................................................................................................... 84

6.3

AT Command and S-Register Summary ......................................................................................... 85

Chapter 7 - Callback Security and Remote Configuration

7.1

Introduction ...................................................................................................................................... 88

7.2

Callback Feature Description .......................................................................................................... 88

7.3

Remote Configuration Description ................................................................................................... 89

7.3.1

Initial Setup Procedures for Callback and Remote Configuration. ............................................ 89

7.3.2

Remote Configuration Procedures ............................................................................................ 92

7.4

Remote Configuration and Callback Security AT Commands ......................................................... 93

7.5

Remote Configuration/Callback Security S-Registers ..................................................................... 95