OptiX OSN 7500 
Technical Manual - System Description  4 Boards 
 
Huawei Technologies Proprietary 
4-9 
Boa rd  Full name  Available slot  Interface 
type 
Used with 
D12B  32 x E1/T1 electrical 
interface board 
slot 19–slot 22, slot 35–slot 38  DB44  PQ1, PQM 
 
4.2.3  Data service Interface Unit 
Table 4-8 shows the data service processing boards and their available slots, and 
Table 4-9 shows the data service interface boards and their available slots. 
Table 4-8 Data service processing boards and their available slots 
Board  Full name  Slot available  Outlet mode  Interface type  Connector 
EGS2 2-port Gigabit 
Ethernet 
interface board 
slot 1–slot 8, 
slot 11–slot 18, 
slot 26–slot 31 
Led out from 
the front panel 
1000BASE-SX/LX/ZX LC 
EFS0 Fast Ethernet 
interface board 
with LAN switch 
slot 2–slot 3, 
slot 17–slot 18 
Led out from 
the interface 
board 
10/100BASE-TX RJ-45 
EFS4 4-port fast 
Ethernet 
interface board 
with LAN switch 
slot 1–slot 8, 
slot 11–slot 18, 
slot 26–slot 31 
Led out from 
the front panel 
10/100BASE-TX RJ-45 
EGT2 2-port Gigabit 
Ethernet 
transparent 
transmission 
board 
slot 1–slot 8, 
slot 11–slot 18, 
slot 26–slot 31 
Led out from 
the front panel 
1000BASE-SX/LX/ZX LC 
EFT8 8-port fast 
Ethernet 
transparent 
transmission 
board 
slot 1–slot 8, slot 
11–slot 18, slot 
26–slot 31 
Led out from 
the front panel 
10/100BASE-TX RJ-45 
EMR0  12 FE + 1 GE 
Ethernet ring 
network board 
slot 2–slot 3, 
slot 17–slot 18 
Led out from 
the front panel 
or the interface 
board 
10/100BASE-TX, 
1000BASE-SX/LX/ZX 
RJ-45, LC