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TC12 General Handbook

666/HB/43100/000 Page 1-1 Issue 9

1. INTRODUCTION

1.1 Purpose

This document describes to the user the TC12 Traffic Control Data Transmission System, which

consists of an Instation, an Outstation, an Instation Test Set and an Outstation Test Set.

1.2 Related documents

666/HE/43100/000 TC12 Installation, Commissioning and Maintenance Handbook.

1.3 Definitions

BABT British Approvals Board for Telecommunications

BT British Telecom

DFM Detector Fault Monitoring

DSP Digital Signal Processor

IMD Intelligent Modem Driver

I/O Input/Output

ITU Instation Transmission Unit

ITS Instation Test Set

OTU Outstation Transmission Unit

OTS Outstation Test Set

PC Personal Computer

PSTN Public Switched Telephone Network

RAM Random Access Memory

RLM Red Lamp Monitoring

SCOOT Split Cycle Offset Optimisation Technique

TCC Traffic Control Computer

UTC Urban Traffic Control

1.4 Summary of Major Changes

OTU / Instation RS232 communications added

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Siemens TC12 Guía de usuario Pagina 8