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[M.620] Recommendation M.620 (11/88) - Methods for carrying out routine measurements on circuits


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Table of Contents
ITU-T Rec. M.620 - METHODS FOR CARRYING OUT ROUTINE MEASUREMENTS ON CIRCUITS
NOTES
METHODS FOR CARRYING OUT ROUTINE MEASUREMENTS ON CIRCUITS
1 Measurements and tests carried out manually
  1.1 Measurements of overall loss
  1.2 Noise measurements
  1.3 Signalling tests
  1.4 Records
2 Use of automatic transmission measuring and signalling testing equipme
t - ATME No. 2
  2.1 Transmission measurements
  2.2 Signalling tests
  2.3 Test of echo control devices
3 Corrective action
  3.1 Readjustment of overall loss
  3.2 Measurements at more than one frequency
  3.3 Noise measurements
4 Other measurements without recommended periodicity
References

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