Board
OptiX OSN 3500 TM - SD
2-2
To meet requirements for different service capacities, the OptiX OSN 3500 supports
two types of cross-connect board: GXCS (higher-order cross-connect capacity: 35G
and lower-order cross-connect capacity:5G) and EXCS (higher-order cross-connect
capacity: 60G and lower-order cross-connect capacity:5G).
Table 2-1
Functions and subordinate boards of respective system units
Unit
Subordinate board
Function
SDH processing
board
SL64, SL16, SLQ4, SLD4,
SL4, SLQ1, SL1, SEP1
Optical Booster
Amplifier Board
BA2, BPA
Dispersion
compensation board
DCU
SDH
interface unit
SDH interface board
EU08, OU08, EU04
Access and process
STM-1/STM-4/STM-16/STM-
64 optical signals and
STM-4c/STM-16c/STM-64c
concatenated signals,
Access and process STM-1
electrical signals, and
provides the STM-1 electrical
signals with TPS.
PDH processing
board
SPQ4, PD3, PL3, PQ1, PQM
PDH interface board
MU04, D34S, C34S, D75S,
D12S, D12B
PDH
interface unit
PDH Interface
Switching & Bridging
Board
TSB8, TSB4
Access and process E1,
E1/T1, E3/DS3 and E4 PDH
electrical signals and
provides them with TPS.
2-Port Gigabit
Ethernet Optical
Interface Board with
Lanswitch
EGS2
Access and process
1000Base-SX/LX GE optical
signals.
Fast Ethernet
interface board with
Lanswitch
EFS0
4-Port fast Ethernet
interface board with
Lanswitch
EFS4
Interface
unit
Ethernet
Interface
Unit
FE twisted pair
interface unit
ETF8
Access and process
10Base-T, 100Base-TX
Ethernet electrical signals.
SDH cross-connect
matrix unit
Synchronous timing unit
GXCS, EXCS
Implement cross connection
between the SDH and PDH
signals and provide the
equipment with system clock
SCC unit
Overhead processing
unit
SCC
Provide interface for
connecting the equipment
with the NM system and
process the SDH signal.