Committees responsible
Foreword
Specification
Section 1. General
1 Scope
2 Abbreviations and definitions
3 General operating conditions
4 Marking
5 Information to be provided by the supplier
6 Electrical network connection methods
Section 2. Electrical characteristics of apparatus
7 Apparatus off-line (idle state)
8 Apparatus off-line (ringing state)
9 Apparatus on-line (non-signalling state)
10 Apparatus on-line (signalling state)
11 Apparatus on-line (signalling state): multi-
frequency (MF) tone signalling
12 Special signalling conditions
13 Speech transmission process
14 Call control
Section 3. Other requirements
15 Control layout and operation
16 Safety
17 Dial labels
Annexes
A General conditions of test
B Methods of test
Tables
1 Allocation of plug pins
2 Table deleted
3 Coordinates of voltage limit curves for dc
characteristics
4 Coordinates of sending sensitivity limit curves
5 Coordinates of receiving sensitivity limit curves
6 Coordinates of sending loudness rating limit curves
for line lengths up to 7.5 km
7 Coordinates of receiving loudness rating limit
curves for line lengths up to 7.5 km
8 Parameters required to calculate SLR, STMR and RLR
Figures
1 Circuit for speech immunity testing of ringing
detector
2 DC characteristics
3 Sending sensitivity limits for line lengths of 0 km
4 Sending sensitivity limits for line lengths over
0 km and up to 3 km
5 Sending sensitivity limits for line lengths over
3 km and up to 7.5 km
6 Receiving sensitivity limits for line lengths of
0 km
7 Receiving sensitivity limits for line lengths over
0 km and up to 3 km
8 Receiving sensitivity limits for line lengths over
8 km and up to 7.5 km
9 Sending loudness rating limits
10 Receiving loudness rating limits
11 Configuration of a typical UK rotary dial
12 Limits of ambient noise for speech transmission
tests
13 The local telephone system (LTS)
14 Artificial line segment, 0.1 km length
15 Feeding bridge
16 Circuit for measurement of signal levels
17 Circuit for instability test
18 Circuit for ringing signal tests
19 Test hammer
20 Handset position for instability test
List of references