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Other I-modem Features A-1
Appendix A
Other I-modem Features
This chapter explains how to use new features not covered in the Courier
I-modem Command Reference manual.
Data Over Voice
Data Over Voice (DOV) is a feature that allows the I-modem to make
more cost effective 3.1 kHz analog calls while allowing the I-modem to
send digital data at 56 kbps.
Note: DOV is becoming widely used due to the fact that Regional Bell
Operating Companies usually charge less for analog calls than digital
calls. DOV allows users to pay a lower fee while taking advantage of the
digital transmission.
Protocols Supported by Data Over Voice
You can use Data Over Voice with V.120 and Multilink PPP calls.
Configuring Data Over Voice
Use the following *V2 settings to control Data Over Voice:
To force Use these commands
V.120 DOV calls
*V2=0 and S69.5=1
Multilink PPP DOV calls
*V2=5 and S69.5=1 and the usual
PPP setting
Incoming analog Multilink PPP
calls through the data port
*V2=5, S69.5=1 and S67.2=1 and
the usual PPP setting
- Courier™ I-modem® 1
- Getting Started Guide 1
- Final Draft 1
- Read this First 3
- Contents 4
- Chapter 1 10
- Introduction 10
- Optional Built-in NT-1 12
- Optional Analog Device Jack 12
- TurboPPP 12
- Rate Adaptation 12
- Chapter 2 16
- The I-modem and ISDN 16
- What is ISDN? 17
- Benefits of ISDN 17
- The ISDN Basic Rate Interface 17
- Physical Appearance 17
- B-channels and D-channels 18
- Required Components 19
- How Does the I-modem Fit In? 19
- S/T Interface 20
- Internet Access (TurboPPP) 21
- Chapter 3 24
- Ordering ISDN Service 24
- Requesting ISDN Service 25
- Chapter 4 28
- Installing Your 28
- Internal I-modem 28
- Package Contents 29
- Important! 30
- Default Jumper Settings 31
- Windows 95 Users 32
- I-modem Model S/T 37
- 1 Run HyperTerminal 38
- 4 Change any properties and: 40
- Chapter 5 43
- External I-modem 43
- ISDNTelephone 45
- Chapter 6 47
- Service Profile Identifiers 48
- Terminal Endpoint Identifier 48
- Configuring the I-modem 49
- Chapter 7 57
- Configuring With 57
- AT Commands 57
- Preparing to Send AT Commands 58
- 4 Set up the DATA B-channel 61
- 2 Make a test data call 64
- Analog Device Port 65
- Data Port 65
- Chapter 8 67
- Configuring Your Courier 67
- For Windows 95 67
- Files Needed By Your I-modem 70
- If Dial-Up Networking Do this 72
- Support” to install Dial-Up 72
- Networking 72
- Is not listed Go to Step 3 72
- 4 Click Windows Setup tab 73
- 7 Click OK 74
- Windows 95 8-9 75
- Settings” 76
- 7 Click Finish 79
- 9 Click OK, and OK 79
- Windows 95 8-15 81
- TCP/IP Settings window 81
- Chapter 9 83
- Configuring Your 83
- I-modem For Macintosh 83
- 2 Click PPP and More… 84
- Configuring ConfigPPP Dialer 85
- Dialing With ConfigPPP 85
- Chapter 10 87
- What You Need 88
- Configuring Your I-modem 88
- If You Are Using MS-DOS 89
- For Internal Couriers Only 89
- If You Are Using OS/2 90
- Chapter 11 93
- Configuring TurboPPP 93
- With AT Commands 93
- Making Calls With ML-PPP 94
- Connection With ML- PPP 95
- Pass-through Compression 98
- Auto Mode Compression 98
- Turbo Mode Compression 98
- Chapter 12 101
- Configuring Your I-modem 101
- With DIP Switches and Jumpers 101
- Default DIP Switches 104
- Locating DIP Switches 104
- Locating Jumpers 105
- Changing Jumper Settings 106
- Chapter 13 108
- Viewing LEDs 108
- Viewing LEDs 13-3 110
- Chapter 14 111
- Using x2 111
- Obtaining x2 112
- How x2 Works 113
- Controlling x2 113
- x2 Server Mode 113
- Controlling Link Speeds 114
- New x2 Result Codes 118
- Numeric Alphanumeric 119
- I-modem Command Reference 120
- Appendix A 121
- Other I-modem Features 121
- Period Dial Modifier 122
- PCSDL vs. XMODEM 122
- Forcing Analog Calls 123
- Appendix B 125
- Technical Information 125
- Modulation 126
- Additional Specifications 128
- Ringer Equivalence 129
- Power Consumption 129
- Serial Ports 129
- The EIA-232 Interface 130
- Minimum Requirements 131
- Flow Control Requirements 131
- For Macintosh Computers 132
- I-modem’s serial port: 133
- Choosing a Serial Cable 135
- Notes for Macintosh Users 135
- Notes for Mainframe Users 136
- Macintosh 136
- Appendix D 137
- Warranty 137
- Telephone Support 140
- North America 140
- Europe, Middle East, Africa 140
- All Other Locations 140
- Software/Firmware Updates 141
- Hardware Support 141
- FCC Registration 143
- IC (Industry Canada) 144
- UL Listed Accessory 145
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