中兴 OL16×4

EPE1*21(75) : 21*E1 Electrical Processing Board (75ohm)
EPE1B*21 : 21*E1/T1 Electrical Processing Board
EPT1*21(TU11) : 21*T1 Electrical Processing Board(100ohm,TU11)
EPT1*21(TU12) : 21*T1 Electrical Processing Board(100ohm,TU12)

LP4*1 : 1*STM-4 Line Processing Board
LP4*2 : 2*STM-4 Line Processing Board
NCP : Net Control Processor
NCPI : Net Control Processor Interface

OIS1*1(L-1.1,SC) : 1*STM-1 Optical Interface Board(L-1.1,SC)
OIS1*1(L-1.2,SC) : 1*STM-1 Optical Interface Board(L-1.2,SC)
OIS4*2(L-4.2,SC) : 2*STM-4 Optical Interface Board(L-4.2,SC)

OIS4*2(S-4.1,SC) : 2*STM-4 Optical Interface Board(S-4.1,SC)

OL1/4*4(2*L-1.1+2*L-4.1,LC) : 4*STM-1/4 Optical Line Board(2*L-1.1+2*L-4.1,LC)
OL1/4*4(2*L-1.2+2*L-4.2,LC) : 4*STM-1/4 Optical Line Board(2*L-1.2+2*L-4.2,LC)
OL16(L-16.2U,LC) : STM-16 Optical Line Board(L-16.2U,LC)

OL16(S-16.1,LC) : STM-16 Optical Line Board(S-16.1,LC)

TFE*8(2*FE-L1.2,LC) : Transparent Fast Ethernet(include two L-1.2 module)
TFE*8(2*FE-S1.1,LC) : Transparent Fast Ethernet(include two s-1.1 module)
OBA12(mini,LC) : OBA12(mini,LC)
OBA14(external,input-6,SC) : Optical booster amplifier OBA14 (external,input-6,SC)