|
|
|
|
ITU-T Recommendation M.1050
| Title : | Lining up an international point-to-point leased circuit with analogue presentation to the user |
Date of adoption : 06/1998
TABLE OF CONTENTS
| Page | ||
1 |
Scope |
1 |
2 |
References |
1 |
3 |
Terminology and definitions |
2 |
4 |
Abbreviations |
2 |
5 |
General |
3 |
6 |
Lining up the constituent parts of the circuit |
3 |
6.1 |
National sections |
3 |
6.1.1 |
Overall loss at reference frequency |
3 |
6.1.2 |
Loss/frequency distortion (special quality circuits only) |
4 |
6.1.3 |
Group-delay distortion (special quality circuits only) |
4 |
6.2 |
International section |
4 |
6.2.1 |
Overall loss at reference frequency |
4 |
6.2.2 |
Loss/frequency distortion |
4 |
6.2.3 |
Group-delay distortion (special quality circuits only) |
4 |
6.3 |
International link |
4 |
7 |
Lining up the overall circuit |
4 |
7.1 |
Overall loss |
5 |
7.2 |
Loss/frequency distortion |
5 |
7.2.1 |
Ordinary quality circuits |
5 |
7.2.2 |
Special quality circuits |
5 |
7.3 |
Group-delay distortion (special quality circuits only) |
5 |
7.4 |
Variation with time of the overall loss at 1020 Hz |
6 |
7.4.1 |
Amplitude hits (special quality circuits only) |
6 |
7.4.2 |
Other variations |
6 |
7.5 |
Random circuit noise |
6 |
7.6 |
Impulsive noise (special quality circuits only) |
6 |
7.7 |
Phase jitter (special quality circuits only) |
6 |
7.8 |
Total distortion (special quality circuits only) |
6 |
7.9 |
Single tone interference (special quality circuits only) |
7 |
7.10 |
Frequency error (special quality circuits only) |
7 |
7.11 |
Harmonic and intermodulation distortion (special quality circuits only) |
7 |
7.12 |
Crosstalk (special quality circuits only) |
7 |
7.13 |
Power source interferences (special quality circuits only) |
7 |
8 |
Section-by-section line-up |
7 |
8.1 |
Lining up the analogue-type section |
8 |
8.1.1 |
National sections |
8 |
8.1.2 |
International section |
10 |
8.2 |
Lining up the digital-type section |
10 |
8.2.1 |
National sections |
10 |
8.2.2 |
International section |
11 |
8.3 |
Overall circuit |
11 |
8.3.1 |
Configuration and testing of digital-type sections bounded by A/D converters |
11 |
8.3.2 |
Overall lineup |
11 |
9 |
Additional reference measurements |
11 |
10 |
Functional checks |
11 |
11 |
Transmission level checks |
12 |
12 |
Level limiters |
12 |
13 |
Marking of equipment associated with special quality circuits |
12 |
14 |
Short-time rerouting of special quality leased circuits |
12 |
Summary
This Recommendation provides two methodologies to ensure effective lining up of an
international leased circuit with analogue
presentation to the user.
Home | Search | Site Map | Help | Contact | Comments | © Copyright
Last Modified: 1998-11-02
