14
MA365 • Rev. A2
Tellabs
®
6325 Edge Node
Preface
IEC
International Electrotechnical Commission
I/O
Input/Output
ITU-T
ITU - Telecommunication Standardisation Sector
ITU
International Telecommunication Union
LED
Light Emitting Diode
Mbit/s
Megabit per second
MTBF
Mean Time Between Failures
MLM
Multi Longitudinal Mode Laser
NA
Not Applicable
NE
Network Element
nm
nanometer, (1*E-9 meter)
NM
Network Management
PDH
Plesiochronous Digital Hierarchy
PIM
PDH Interface Module
PRC
Primary Reference Clock
ps
picoseconds
PS-DC
Power Supply - DC (DC/DC converter)
RX
Receive
S4
VC-4 path layer
S12
VC-12 path layer
SDH
Synchronous Digital Hierarchy
SEC
Synchronous Equipment Clock
SFP
Small Formfactor Pluggable
SIMX
SDH Interface and Cross-connection Module
SIR
Signal / Interference Ratio
SLM
Single Longitudinal Mode Laser
SNC/I
Inherently monitored Sub-Network Connection protection
SNC/N
Non-intrusively monitored Sub-Network Connection pro-
tection
SPIMX
SDH and PDH Interfaces and Cross-connection Module
STM
Synchronous Transport Module
STP
Shielded twisted pair
SW
Software
SYNC
Synchronization
T0
Outgoing SDH timing reference point
T1
Incoming SDH timing reference point
T2
Incoming PDH timing reference point
T3
External 2.048 MHz reference timing source
TDEV
Time Deviation
TM
Terminal Multiplexer
TRIB
Tributary
TX
Transmit
VC-4
Virtual Container of 4'th order
VC-12
Virtual Container of 1’st order
Definition of Terms
System/Network
Element:
A complete functional unit with transport and element management function-
ality, power supply; all mounted in one or more subracks.
Содержание 6325
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