数字对讲机无线通信技术的经典文档

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Section 2 System Feature Overview
2.1  Digital Radio Technology........................... ....3
2.1.1 Digital Radio Technology Overview .....................................3
2.1.2 Spectrum Efficiency via Two-Slot TDMA ............................. 5
2.1.3 Digital Audio Quality and Coverage Performance....................9
2.2 Basic System Topologies for Digital and Analog Operations ................... 14
2.2.1 Repeater and Direct Mode Configurations...............................14
2.2.2 Supports Analog and Digital Operation ................ 21
2.2.3 Channel Access ................................. ........ ..........22
2.3 Digital Features ................................................. 26
2.3.1 Digital Voice Features .................................................. 26
2.3.2 Transmit Interrupt........................................................29
2.3.3 Digital Signaling Features ........................................................ 31
2.3.4 Digital Emergency............................................................. 35
2.4 Integrated Data................................. .......... 44
2.4.1 Overview ..................................................................... 44
2.4.2 Text Messaging Services ......................... 46
2.4.3 Location Services .............................................................. 50
2.4.4 Telemetry Services ............................................................... 63
2.4.5 Data Precedence and Data Over Voice Interrupt.................................. 65
2.5 Scan ...................................................................... 66
2.5.1 Priority Sampling ................................................................ 67
2.5.2 Channel Marking...................................... 68
2.5.3 Scan Considerations ................................................................. 69
2.5.4 Transmit Interrupt and Scan......................................................... 74
2.6 Site Roaming....................................................................... 75
2.6.1 Passive Site Searching ........................................................ 76
2.6.2 Active Site Searching ........................................................... 78
2.6.3 Roaming Considerations.......................................................... 80
2.7 Voice and Data Privacy ............................................................. 92
2.7.1 Types of Privacy................................................................ 92
2.7.2 Strength of the Protection Mechanism...................................... 93
2.7.3 Scope of Protection............................................................. 93
2.7.4 Effects on Performance...................................................... ....... 94
2.7.5 User Control Over Privacy ......................................................... 94
2.7.6 Privacy Indications to User...................................................... 96
2.7.7 Key Mismatch............................................................ 97
2.7.8 Keys and Key Management.......................................................... 97
2.7.9 Multiple Keys in a Basic Privacy System ......................................... 98
2.7.10 Data Gateway Privacy Settings............................................... 99
2.7.11 Protecting One Group’s Message from Another ............................... 100
2.7.12 Updating from Basic Privacy to Enhanced Privacy .......................... 100
2.8 Repeater Diagnostics and Control (RDAC)............................................ 101
2.8.1 Connecting Remotely via the Network............................................... 103
2.8.2 Connecting Locally via the USB................................................ 103
2.8.4 Redundant Repeater Setup ...................................................... 106
2.8.5 Dual Control Considerations ..................................................... 107
2.8.6 General Considerations When Utilizing the RDAC Application to
Set Up the Network Connection .......................................108
2.9 IP Repeater Programming (IRP) ................................................. 109
2.9.1 System Configuration for IRP Support ..................... ......................... 109
2.10 Voice Operated Transmission (VOX)................................................... 110
2.10.1 Operational Description........................................................ 110
2.10.2 Usage Consideration........................................................... 110
2.11 Lone Worker............................................................... 111
2.12 BluetoothTM Support ................................................................ 112
2.12.1 Bluetooth Pairing and Connection.................................................. 112
2.12.2 Bluetooth Headset/PTT and Radio Operation.................................. 113
2.12.3 Bluetooth Barcode Scanner Operation ............................................ 113
2.12.4 Recommended Bluetooth Devices................................................... 114
2.12.5 Avoiding Accidental Connection..................................................... 114
2.13 One Touch Home Revert Button ....................................................... 115
2.14 Password and Lock Feature (Radio Authentication) ........................... 115
2.15 Digital Telephone Patch (DTP)....................................................... 116
2.15.1 Phone Call Initiation ........................................................... 116
2.15.2 During a Phone Call ......................................................... 118
2.15.3 Ending a Phone Call ............................................................ 119
2.15.4 Digital Telephone Patch System Configuration................................. 120
2.16 Analog Features .................................................................... 124
2.16.1 Analog Voice Features.......................................................... 125
2.16.2 MDC Analog Signaling Features...................................................... 125
2.16.3 Quik-Call II Signaling Features .................................................. 126
2.16.4 Analog Scan Features .................................................... 127
2.16.5 Analog Repeater Interface .................................................. 129
2.16.6 Comparison Chart ............................................................. 135
2.17 Application Developers Program (ADP) .............................................. 137
2.17.1the Dealer, and the Accredited-Third-Party Developer.. ... ... ... ... .... 137

Section 3 System Components and Topologies

Section 4 System Design Considerations

Section 5 Sales and Service Support Tools

Appendix A Replacement Parts Ordering ................................... 1
Appendix B Control Station Installation.......................................... 1
B.1 Data Bearer Service.................................................................. 1
B.2 Interference......................................................................... 2
B.3 Control Station Installation Considerations .................................... 3
Glossary


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