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Settingup and maintenance of international carrier systems
Numbering in coaxial systems M 38 M
13 other sections not shown
adjusted administrations concerned amplitude modulation audio-frequency automatic broadcasting authorities cable carrier systems circuit access points circuit sections compandor control I.T.M.C. crosstalk dBm0 dBm0p decibels direction of transmission duration echo suppressors fault report Figure four-wire Four-wire circuits given in Recommendation group delay group link interconnected international circuits international sound-programme circuit international sound-programme link interruptions limits line-up period lining-up loss/frequency characteristic loss/frequency distortion maintenance centre mastergroup national section nepers noise measurements noise power nominal value otherwise unspecified overall loss possible power level preparatory period private operating agencies psophometric voltage radio-relay readjustment received level reference pilot regulated line section renter repeater stations routed routine maintenance measurements section control stations service circuits sound-programme transmission Study Group sub-control I.T.M.C. sub-control stations supergroup link supermastergroup technical services television authorities television circuits television transmission terminal equipment terminal station test signal through-connection transmitted voice-frequency telegraph link Volume White Book