Specification for safety requirements for apparatus for connection to British Telecommunications networks
€281.00
Specification for electrical safety requirements for apparatus for connection to telecommunication networks
Specification for electrical safety requirements for apparatus for connection to certain telecommunication networks
Telecommunications Security. A guide to specifying requirements for cryptographic algorithms.
€69.00
Business TeleCommunications (BTC); 34 Mbit/s and 140 Mbit/s digital leased lines (D34U, D34S, D140U, D140S); Network interface presentation.
€79.00
Business TeleCommunications (BTC); 34 Mbit/s digital leased lines (D34U and D34S); Connection characteristics.
€84.00
Access and Terminals (AT); Digital access to the public telecommunications network; Publication of interface specification under Directive 1999/5/EC. Guidelines for describing digital interfaces.
€61.00
Intelligent Network (IN); IN Capability Set 1 (CS1) extension; Intelligent Network Application Protocol (INAP); Customized Applications for Mobile network Enhanced Logic (CAMEL); Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification.
€78.00
Telecommunications Security; Trusted Third Parties ( TTP); Requirements for TTP services.
€92.00
IEC 60050-721:1991/AMD1:2016 Amendement 1 - International Electrotechnical Vocabulary (IEV) - Part 721: Telegraphy, facsimile and data communication
€12.00
IEC 60050-721:1991/AMD2:2017 Amendement 2 - International Electrotechnical Vocabulary (IEV) - Part 721: Telegraphy, facsimile and data communication
IEC 60050-722:1992/AMD1:2017 Amendment 1 - International Electrotechnical Vocabulary (IEV) - Part 722: Telephony
IEC 60050-721:1991/AMD3:2018 Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 721: Telegraphy, facsimile and data communication
IEC 60050-721:1991/AMD4:2019 Amendment 4 - International Electrotechnical Vocabulary (IEV) - Part 721: Telegraphy, facsimile and data communication
IEC 60050-721:1991/AMD5:2021 Amendment 5 - International Electrotechnical Vocabulary (IEV) - Part 721: Telegraphy, facsimile and data communication
