Alarm systems. Alarm transmission systems and equipment - Requirements for equipment used in systems with digital communicators using the public switched telephone network Ingestion-build-159183 airborne structures or naval vessels

airborne structures or naval vessels

NOTE 1: In accordance with EN 10020

it applies to suppliers preparing these documents on behalf of the railway companies or railway network users

the sizes of imperfections permitted by standards are compared with the dimensions of indications revealed by a radiograph made of the weld

Alarm systems. Alarm transmission systems and equipment - Requirements for equipment used in systems with digital communicators using the public switched telephone network Ingestion-build-159183 airborne structures or naval vesselsAlarm systems Alarm transmission systems and equipment Part 2 3: Requirements for equipment used in systems with digital communicators using the public switched telephone network Executive summary Requirements for alarm transmission equipment used in digital communicator systems utilizing the public switched telephone network. Abstract This European Standard specifies additional requirements to those specified in EN 50136 2 1 for equipment used in