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BS PD 7021:1996 Essential requirements for terminal equipment intended for connection to 4-wire analogue speechband leased lines of the public telecommunications network
standard by BSI Group, 06/15/1996
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Cross References:
BS 6328:Part 1
CCITT Recommendation B.12
73/23/EEC
89/336/EEC
91/263/EEC
Telecommunications Act 1984
BS 2045
BS 6312:Part 1
CCITT Recommendation O.133
CCITT Recommendation P.34
CCITT Recommendation P.51
CCITT Recommendation P.52
CCITT Recommendation P.64