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
€172.00
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
Private branch exchanges for connection to public switched telephone networks run by certain telecommunication operators. Direct dialling in on private Specification direct with terminating stations treated as an entirety
€281.00
Private branch exchanges for connection to public switched telephone networks run by certain telecommunications operators Specification general requirements
€329.00
Private branch exchanges for connection to the British Telecommunications public switched telephone network. Facilities on private Specification facilities with terminating stations treated as an entirety
Private branch exchanges for connection to public switched telephone networks run by certain telecommunications operators Specification private with terminating stations treated as an entirety
Private branch exchanges for connection to public switched telephone networks run by certain telecommunications operators. Simple call-routeing mode (SCRM) Specification the simple of PBX operation, with terminating stations treated as an entirety
€201.00
Graphical symbols for diagrams. Part 9 : telecommunications : switching and peripheral equipment.
€82.00
ELECTROTECHNICAL VOCABULARY. SWITCHING AND SIGNALLING (IN TELECOMMUNICATIONS).
€120.00
GRAPHICAL SYMBOLS FOR DIAGRAMS. PART 9: TELECOMMUNICATIONS. SWITCHING AND PERIPHERAL EQUIPMENT.
€71.00
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances.
€77.00
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 2-3: Immunity requirements for mains communicating equipment operating in the range of frequencies 3 kHz to 95 kHz and intended for use by electricity suppliers and distributors
€79.00
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-4 : Low voltage decoupling filter - Impedance filter
€42.67
Road traffic management equipment. Maintenance. Recommendations for maintenance. Part 1. Recommendations for preventive maintenance of metallic structures
€62.00
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-3: Low voltage decoupling filter - Incoming filter
€53.00
