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Normas BSI – AENOR
BS 6450-7:1990

BS 6450-7:1990

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Specification for the procedure for in-service observation of PBXs undergoing type approval

Fecha Anulación:
2009-05-01 /Withdrawn
Testing conditions, Failure (quality control), Telephone switching equipment, Telephone exchanges, Acceptance (approval), Communication equipment, Type approval, Performance testing, Telephone equipment, Visual inspection (testing), Telecommunication systems, Reports, Approval testing, Telephony
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