Private branch exchanges for connection to public switched telephone networks run by certain telecommunications operators Specification ports
€404.00
Low voltage surge protective devices Specification for gas discharge tubes (GDT)
€269.00
Specification Number DPNSS [188]. Digital Private Network Signalling System No 1
Specification number DPNSS [189]. Interworking between DPNSS 1 and other signalling systems
Specification Number DPNSS [189-I]. Interworking between DPNSS 1 and ISDN Signalling Systems
PNO-ISC information document number 007. UK interconnect use of SCCP
€316.00
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 Requirements apparatus Channel Associated Systems (CASS)
€193.00
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 General requirements
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
Private branch exchanges for connection to public switched telephone networks run by certain telecommunications operators Specification general requirements
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
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 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
