Zyxel-communications Omni 288S Manual do Utilizador Página 90
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Chapter 10 - Voice Mode Operation
10-11
AT Command Syntax
AT is the command line prefix. Voice commands take one of the following forms:
Command-Form Syntax Command-Form Function
+V<CM>? Read current setting.
+V<CM>=? Read permissible settings.
+V<CM>=<string> Set single-value parameter.
+V<CM>=<value_string> Set compound parameter.
Voice AT commands begin with ‘AT’ followed by a ‘+V’ command prefix.
<CM> represents the command character/s. The command parameters can are
made up of <value> and/or <value_string> parameter types. The <value_string>
type consists of multiple values separated by commas or semicolons.
The first two command-forms are for read actions, the last two are for write
actions. A command line may contain either or both action types or be of the read
or write type only.
Response Syntax
For each command line received, the modem issues a response to each command
in the command line followed by a final response.
Each command response is of the form:
<CR><LF>
<value>(or) <value range> (for ? or =? read commands)
<CR><LF>
with a final response of:
<CR><LF>
OK (or) ERROR
<CR><LF>
The final response is OK if all the commands in the command line have been
successfully executed, otherwise it is ERROR.
Note: <CR><LF> characters will not be shown in further examples.
Flow Control
Flow Control is necessary to match the DTE-DCE data rate to the line signaling
rate and to the analog conversion of the voice signals and data. For the Omni
288S, both software XON/XOFF and hardware RTS/CTS flow control are used -
the software flow control is the default setting. The DTE turns off the flow
control, but some other method may be used to avoid overrun of the buffer.
- Omni 288S 1
- User’s Manual 1
- Limited Warranty 2
- Copyright 1996 by ZyXEL 2
- Acknowledgements 2
- FCC Part 15 Information 3
- FCC Requirements 3
- Table of Contents 6
- Chapter 1 - Introduction 11
- Unpacking Your Modem 12
- Becoming a Registered Owner 13
- Omni 288S Modem Features 13
- Intelligent Features 14
- Fax Compatibility 14
- Voice Features 14
- Technical Specifications 15
- Chapter 2 - Installation 16
- Telephone Jack 17
- Microphone 17
- Windows 95 Dial-up Networking 20
- Understanding AT Commands 26
- Dialing using the ATD Command 27
- Making Your First Connection 28
- Modem Result Codes 30
- Viewing S Register Values 30
- Non-Volatile Memory 31
- Mac Serial Port 33
- Mac Software Tips 33
- Serial Cable 34
- Basic Modem Settings for UNIX 34
- Unix Software Tips 34
- Front Panel LEDs 35
- DTE Interface 36
- RS-232C or EIA-232D/E 37
- Serial RS-232C Cable 37
- Error Control 39
- Data Compression 40
- Run Length Encoding 41
- Adaptive Frequency Encoding 41
- String Coding 41
- Hardware CTS/RTS 42
- Software XON/XOFF 42
- V.25bis Command Set 43
- Clock Options 44
- RTS Options 44
- Command State Options 44
- Dialing from Synchronous Mode 45
- Leased Line Handshaking 46
- Manual Connect 47
- Auto Handshake 47
- Cellular Phone Systems 48
- Cellular Impairments 48
- ZyCellular Modes 49
- Cellular Mode Usage 50
- Office Installation 53
- Security Functions 54
- Remote Configuration 55
- Distinctive Ring 59
- Setting Up EDR 61
- EDR Application Example 62
- Chapter 9 - Fax Operation 63
- Fax Command sets 64
- Class 1 Command Set 65
- Class 2 Command Set 66
- Class 2.0 Command Set 70
- Extended Fax AT Command Set 75
- Fax Reception from a BBS 78
- Set external mail as: 79
- Voice Data Compression 80
- Voice Input/Output Devices 81
- Recording a greeting message 82
- Voice Command State 85
- Voice Data States 86
- Voice Data Reception State 86
- Event Detection and Reporting 87
- Voice AT Commands 89
- AT Command Syntax 90
- Response Syntax 90
- Flow Control 90
- ATD (with +FCLASS=8) 91
- ATH (with + FCLASS=8) 91
- AT+FCLASS=<mode> 91
- Voice Mode Action Commands 93
- AT+VTS=<string> 94
- AT+VTS=? 94
- AT+VTX 94
- AT+VGR=<gain> 95
- AT+VGR? 95
- AT+VGR=? 95
- AT+VGT=<level> 95
- AT+VLS? 97
- AT+VLS=? 97
- AT+VSD? 97
- AT+VSD=? 97
- Basic AT Command Set 99
- Description of ATI2 Output: 101
- Extended AT& Command Set 102
- Extended AT* Command Set 105
- S-Register Descriptions 107
- Result Code Options 116
- Diagnostics 118
- Resetting The Modem 119
- Loopback Tests 119
- Indicator Lights 120
- Trouble Shooting 121
- Command Echo Problems 122
- Answer Problems 123
- Dialing Problems 123
- Data Transfer Problems 123
- Connect Problems 124
- Upgrading by Flash EPROM 125
- Kernel Recovery Mode 125
- ZyXEL Phone Numbers 126
- Online Access 127
- Phone Jack Pinouts 128
- PC Serial Port Pinouts 128
- Macintosh Serial Port Pinouts 129
- Glossary 130
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