[M.580] Recommendation M.580 (11/88) - Setting up and lining up an international circuit for public telephony
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| | Table of Contents | ITU-T Rec. M.580 - SETTING UP AND LINING UP AN INTERNATIONAL CIRCUIT FOR PUBLIC TELEPHONY
NOTES
SETTING UP AND LINING UP AN INTERNATIONAL CIRCUIT FOR PUBLIC TELEPHONY
1 Introduction
2 Organization
3 Limits for the overall loss of a circuit and circuit sections
3.1 Limits for overall loss at 1020 Hz
3.2 Limits for the overall loss/frequency characteristic
4 Setting up and lining up analogue and mixed circuit sections
5 Setting up and lining up mixed analogue/digital and digital terminal circuit sections
6 Setting up and testing digital circuit sections
7 Setting up and lining up an international circuit
7.1 Setting up the circuit
7.2 Lining up the circuit
8 Measurement of circuit noise
9 Measurement of total distortion
9.1 General
9.2 Measurement of total distortion using a test signal level of - 10 dBm0
9.3 Measurement of total distortion using a test signal level of - 25 dBm0
10 Measurements of other parameters
11 Check of signalling level
12 Functional tests
13 Exchange of information on echo canceller test capability
14 Records of results
15 Setting up and lining up an international circuit using ATME
15.1 Setting up the circuit
15.2 Lining up the circuit
15.3 Other tests
15.4 Recording of results
ANNEX A - Methods proposed for setting up and lining up of mixed analogue/digital terminal sections
A.1 Check of the mixed analogue/digital terminal equipment
A.2 Measurement and adjustment of levels
A.3 Other measurements
A.4 Mixed analogue/digital sections at terminal exchanges
References
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