6    Distribution of audio signals

David M. Davidson

Chief Engineer, Telephone Systems, Northern Telecom Europe Ltd

6.1  Telephony

6.2  Telephony transmission systems

David C. Yates

Broadcast Transmission Training Consultant, BBC Transmission

6.3  Radio propagation

Bev Marks

Broadcast Consultant

6.4  Transmission developments: NICAM and RDS

Francis Rumsey

Senior Lecturer, University of Surrey

6.5  Digital audio interfacing, synchronization and networks

6.1 Telephony

6.1.1 Introduction

The basic objective of telephony is to provide a service to enable two customers at a distance to set up a call via the network so that both may talk to each other. The telephone system must supply the means of connecting two telephones together via signalling, ...

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