FOREWORD
Section
1 General terms
2 Telephone set components
3 Telephone set feeding and signaling
4 Telephone set types
5 Telephone set accessories
6 Telephone networks
7 Telephone exchanges
8 Private telephone system
9 Description of private telephone systems (under
consideration)
10 Telephone calls description
11 Telephone services (under consideration)
12 Local line networks
13 Telephone station usage
14 Private installation operation (under consideration)
15 Transmission performance
16 Measuring apparatus
17 Telephonometry
INDEX