CCITT Rec. M.1050 (11/1988) – LINING UP AN INTERNATIONAL POINT-TO-POINT LEASED CIRCUIT
1 General
2 Lining up the constituent parts of the circuit
    2.1 National sections
    2.2 International section
    2.3 International link
3 Lining up the overall circuit
    3.1 Overall loss
    3.2 Loss/frequency distortion
    3.3 Group-delay distortion (special quality circuits only)
    3.4 Variation with time of the overall loss at 1020 Hz
    3.5 Random circuit noise
    3.6 Impulsive noise (special quality circuits only)
    3.7 Phase jitter (special quality circuits only)
    3.8 Total distortion (special quality circuits only)
    3.9 Single tone interference (special quality circuits only)
    3.10 Frequency error (special quality circuits only)
    3.11 Harmonic and intermodulation distortion (special quality circuits only)
4 Section-by-section line-up
    4.1 National sections
    4.2 International section
    4.3 Overall circuit
5 Additional reference measurements
6 Functional checks
7 Transmission level checks
8 Level limiters
9 Marking of equipment associated with special quality circuits
10 Short-time rerouting of special quality leased circuits
References