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prEN 60839-7-7
Alarm systems - Part 7-7: Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interface for plug-in alarm system transceivers
prEN 60839-7-11
Alarm systems - Part 7-11: Message formats and protocols for serial data interfaces in alarm transmission systems - Serial protocol for use in digital communication systems using ITU-T Recommendation V.23 signalling at interfaces with the PSTN
prEN 60839-7-12
Alarm systems - Part 7-12: Message formats and protocols for serial data interfaces in alarm transmission systems - PTT interfaces for dedicated communications channels using ITU-T Recommendation V.23 signalling
prEN 60839-7-20
Alarm systems - Part 7-20: Message formats and protocols for serial data interfaces in alarm transmission systems - Terminal interfaces employing ITI-T Recommendation V.24/V.28 signalling
IEC/TC 122
UHV AC transmission systems
CEN/TC 247/WG 4
Open System Data Transmission
NA 060-34-35 AA
Chains and chain sprockets for power transmission and conveyors
NA 031-02-03 AA
Transmission Facilities - mirror committee of CEN/TC 72/WG 15
IEC/ACTAD
Advisory Committee on Electricity Transmission and Distribution
ISO/TC 100
Chains and chain sprockets for power transmission and conveyors
