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ÖNORM EN 300166 V 1.2.1:2001-11

Действует
Transmission and Multiplexing (TM) - Physical and electrical characteristics of hierarchical digital interfaces for equipment using the 2 048 kbit/s-based plesiochronous or synchronous digital hierarchies
The present document specifies the physical and electrical parameters of interfaces based on ITU-T Recommendations
G.702 [1], G.703 [2] and G.707 [3] for interconnection of digital network elements:
- in-station (i.e. for distances below a few hundred metres);
- using metallic (symmetrical or coaxial) pairs;
- at 64, 2 048, 8 448, 34 368 and 139 264 kbit/s hierarchical levels of the Plesiochronous Digital Hierarchy (PDH)
and at the first level of the Synchronous Digital Hierarchy (SDH) (STM-1 at 155 520 kbit/s).
The present document also describes the requirements for the physical and electrical parameters of the 2 048 kHz
synchronization interface.
ICS
33.040.20 Transmission. Including synchronization, cable systems, integrated cabling, pathways and multiplexing / Системы передачи. Включая синхронизацию, кабельные системы, интегрированные кабельные системы, магистрали и уплотнение каналов