NEC PASOLINK+ - Page 23

PASOLINK
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155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005
- 18 -
Figure 4-4 PASOLINK
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- Hot-standby / Space Diversity System Block Diagram
ANT ANT
ANT ANT
150M INTFC : Electrical STM-1 Interface ANT : Antenna CTRL : Control DC-DC CONV : DC-DC Converter IDU : MDP-150MB5T-2-
LO : Local Oscillator MODEM : Modulator-Demodulator ODU : TRP( )G150MB5-2- OPT INTFC : Optical STM-1 Interface OW : Orderwire
RF CKT : Radio Frequency Circuit STM-1 : Synchronous Transport Module-1 WS INTFC : Wayside Interface (optional)
*1 WS INTFC or LAN CARD is used exclusively. *2 150M INTFC/OPT INTFC or 10/100Base-T(X) INTFC is used exclusively.
MODEM
DC-DC CONV
ODU
INTFC
150M INTFC/
OPT INTFC
MODEM
DC-DC CONV
ODU
INTFC
WS INTFC
CTRL
STM-1
IN/OUT
PNMS
LCT
WS IN/
OUT
DC-DC
CONV
RF
CKT
CTRLLO
OW IN/OUT
DC-DC
CONV
RF
CKT
CTRLLO
OW IN/OUT
MD UNIT MD UNIT
SW UNIT
ODU(No.1 CH)
ODU(No.2 CH)
IDU
LAN CARD
10Base-T
*1
*1
*2
*2
MODEM
DC-DC
CONV
ODU
INTFC
150M INTFC/
OPT INTFC
MODEM
DC-DC
CONV
ODU
INTFC
WS INTFC
CTRL
STM-1
IN/OUT
PNMS
LCT
WS IN/
OUT
DC-DC
CONV
RF
CKT
CTRL LO
OW IN/OUT
DC-DC
CONV
RF
CKT
CTRL LO
OW IN/OUT
MD UNIT MD UNIT
SW UNIT
ODU(No.1 CH)
ODU(No.2 CH)
IDU
LAN CARD
10Base-T
*1
*1
*2
*2
10/100Base-T(X) 10/100Base-T(X)
2 x
10/100Base-T(X)
2 x
10/100Base-T(X)