Seguridad en las telecomunicaciones. Terceras partes de confianza (TTP). Requisitos para los servicios TTP.
Telecommunications Security; Trusted Third Parties ( TTP); Requirements for TTP services.
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See part of the content of the standard
33.040.01 / Telecommunication systems in general
CTN 133 - Telecommunications
EG 201057V1.1.2:1997 (Identical)
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