Alcatel-Lucent 1643 AMS Operation Manual page 372

Glossary
Supply Unit - Local) - SEC (SDH Equipment Clock) - DUS (Do not Use for
Synchronization).
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R RA
Regenerator Application
Radio Protection Switching system (RPS)
The main function of the RPS is to handle the automatic and manual switching from a
main channel to a common protection channel in an N+1 system.
Radio Relay (RR)
A point-to-point Digital Radio system to transport STM-1 signals via microwaves.
RCU
Rigid Connect Unit
RCVR Data Distribution Unit (RCVR)
Radio Relay circuit pack that distributes of the protection channel and the low-priority
traffic in the receiver side.
RDDU
RCVR Data Distribution Unit
RDSV
Running Digital Sum Violations
Receive-direction
The direction towards the cross-connect.
REGEN
Regenerator
Regenerator Loop
Loop in a network element between the Station Clock Output(s) and one or both Station
Clock Inputs, which can be used to dejitterize the selected timing reference in network
applications.
Regenerator Overhead Controller (ROC)
SLM circuit pack that provides user access to the SDH overhead channels at repeater
sites.
Regenerator Section Termination (RST)
Function that generates the Regenerator Section Overhead (RSOH) in the transmit
direction and terminates the RSOH in the receive direction.
Relay Unit (RU)
Radio Relay circuit pack whose main function is to perform protection switching when
the Alignment Switch in the demodulator unit is unable to perform protection switching.
Remote Defect Indication (RDI)
(formerly → FERF)
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GL-26 Alcatel-Lucent - Proprietary
See notice on first page
365-312-803R7.2
Issue 4, May 2007