User's Manual
Table Of Contents
- Installation and Operation Manual
- Contents
- Preface
- 1 Description
- 2 General Safety and Regulatory Information
- 3 Operation
- 4 Working with Base Stations from Your PC
- 5 Installation
- 6 Maintenance
- 7 Troubleshooting
- 8 Replacing Modules
- Appendix A – Interface Pin Allocations
- Appendix B – Inter-Module Connections
- Glossary
- Tait Software License Agreement
- Directive 1999/5/EC Declaration of Conformity
DRAFT 1
TB9300 Installation and Operation Manual Glossary 123
© Tait Limited May 2013
UTC Coordinated Universal Time (word order from French). An international
time standard that has replaced Greenwich Mean Time.
valid signal A signal that the receiver unmutes to. A signal is valid, for example, when
it is strong enough to be decoded and when it has the specified NAC.
VDP Voice Data Protocol. A proprietary protocol operating over IP for the
exchange of voice and data between a base station and a trunking node
controller.
voice stream A digitized voice signal that passes through the main switch.
VoIP Voice over IP. The name for the technology that puts speech signals in
packets and then routes them over an IP backbone network.
voting The systematic sampling of a group of channels for the channel with the
greatest signal strength. Voting provides wide-area coverage and ensures
that as the user moves throughout the coverage area the strongest channel
is always available for a call.
VPN Virtual Private Network. A private communications network used to
communicate confidentially over a non-private network.
VSWR Voltage Standing Wave Ratio is the ratio of the maximum peak voltage
anywhere on the transmission line to the minimum value anywhere on the
transmission line. A perfectly matched line has a VSWR of 1:1. A high
ratio indicates that the antenna subsystem is poorly matched.
watchdog A circuit that checks that the system is still responding. If the system does
not respond (because the firmware has locked up), the circuit generally
resets the system.