Huawei OptiX OSN 7500 - Page 36

OptiX OSN 7500
Technical Manual - System Description 4 Boards
Huawei Technologies Proprietary
4-3
Unit Constituent board Function
Protection
switching board
ETS8
Ethernet signals, and conduct
TPS protection for them.
Processing board EMR0, EGR2
Interface board ETF8, EFF8
Ethernet
interface unit
(RPR)
Protection
switching board
ETS8
Access and process
1000BASE-SX/LX/ZX,
100BASE-FX, 10/100BASE-TX
Ethernet signals. Support RPR
and conduct TPS protection for
Ethernet signals.
ATM interface unit ADL4, ADQ1, IDL4, IDQ1 Access and process STM-4,
STM-1 ATM signal. ID series
boards provide IMA function.
GE, SAN and Video interface unit MST4 Access and process GE,
FC/FICON, ESCON or DVB-ASI
service.
MR2A, MR2C Provide add/drop multiplexing of
any two adjacent wavelengths.
WDM unit
LWX Implement conversion between
client signaling wavelengths of
any rate (10 Mbit/s to 2.7 Gbit/s
NRZ code signal) and those
wavelengths complying with
G.692 standard.
SDH cross-connect matrix unit
Synchronous timing unit
GXCSA, GXCSB Implement cross connection
between the SDH and PDH/data
signals and provide the
equipment with system clock.
SCC unit
Overhead processing unit
GSCC Provide interface for connecting
the equipment with the NM
system and process the overhead
of SDH signals.
Support intelligent feature.
Power input unit PIU Provide power supply and protect
the equipment against abnormal
power.
AUX Implement centralized power
backup function and provide
auxiliary interfaces externally (F1,
alarm and external clock).
Inter-board communication and
power backup unit
EOW Implement communication
between boards and provide