Sagem ADR 155C manual Operation, Functional description

2 - OPERATION

2. OPERATION

2.1 - Functional description

The ADR 155C is an optical STM1 add-drop multiplexer used to build STM-1 point-to-point links, STM-1 rings, or mesh networks, so achieving the mismatch of links at 2 Mbit/s, Ethernet or STM1.

The ADR 155C can also be connected to an equipment of the synchronous digital hierarchy in accordance with UIT-T recommendations G.707 and G.783.

The ADR 155C modelling in functional blocks according to standard G.783 is presented below:

SPI : SDH Physical Interface
RST : Regeneration Section Termination			OHA : OverHead Access
MST: Multiplex Section Termination
MSP : Multiplex Section Protection
			SETS : Synchronous Equipment
			Timing Source
MSA : Multiplex Section Adaptation
HPOM : Higher order Path Overhead Monitor			SETPI : Synchronous Equipment
			Timing Physical Interface
HPC : Higher order Path Connection
HPT : Higher order Path Termination
HPA : Higher order Path Adaptation			SEMF : Synchronous Equipment
			Management Function
LUG : Lower order path Unequipped Generator
LPOM : Lower order Path Overhead Monitor			MCF : Message
			Communication Function
LPC : Lower order Path Connection
LPT : Lower order Path Termination
LPA Lower order Path	Lower order Path
Adaptation (VC12)	Adaptation	(VC3)
PPI : plesiochronous physical	plesiochronous physical
Interface (VC12)	Interface (VC3)

Installation and User Guide - N56717020101

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