CEPT T/TPH 21-1981
Principes De Retablissement De Services Internationaux De Telecommunications Interrompas
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CEPT T/TPH 21-1981
Standard No.
CEPT T/TPH 21-1981
Release Date
1981
Published By
CEPT - Conference Europeenne des Administrations des Postes et des Telecommunications
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CEPT T/TPH 21-1981
CEPT T/TPH 21-1981 history
1981
CEPT T/TPH 21-1981
Principes De Retablissement De Services Internationaux De Telecommunications Interrompas
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