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[M.520] Recommendation M.520 (11/88) - Routine maintenance on international group, supergroup, etc., links


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Table of Contents
ITU-T Rec. M.520 - ROUTINE MAINTENANCE ON INTERNATIONAL GROUP, SUPERGROUP, ETC., LINKS
NOTES
ROUTINE MAINTENANCE ON INTERNATIONAL GROUP, SUPERGROUP, ETC., LINKS
1 Type of routine tests
2 Links without an automatic regulator
3 Links with an automatic regulator
4 Continuous recording of pilot level

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