Information technology. Telecommunications and information exchange between systems. X.25-DTE conformance testing General principles
€404.00
Single sideband power-line carrier terminals
€316.00
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators Specification the procedure in-service observation of PBXs undergoing type approval
€165.00
Apparatus using cordless attachments (excluding cellular radio apparatus) for connection to analogue interfaces of public switched telephone networks Specification the elements within PBX apparatus with PSTN and terminating stations treated as an entirety
€193.00
Method for the specification of basic and supplementary services of private telecommunication networks
€355.00
Scenarios for interconnections between exchanges of private telecommunication networks
Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface General requirements
€269.00
Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface Specification automatic-repeat call attempt facilities
Specification for safety requirements for apparatus for connection to British Telecommunications networks
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators Specification general requirements
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators Specification private with terminating stations treated as an entirety
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators Specification the procedure of in-service observation PBXs undergoing type approval
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators.Facilities on private Specification facilities with terminating stations treated as an entirety
Code of practice for installation of private branch exchanges for connection to the British Telecommunications public switched telephone network
Code of practice for the selection and accommodation of telephone, telegraph and data communication installations
