A.The TEM28 board supports the L2 switch module and needs to configure the port to VCTRUNK service.

B.The electrical signal can be output ODU0, ODU1flex, 00U1 or ODU2 signals to the backplane for cross scheduling through operations such as encapsulation mapping and OTN framing.

C.TEM28 can simultaneously access FE, GE, 10GE LAN and 10GE WAN services through different ports.

D.RX1/TX1~RX4/TX4 ports are 10GE optical ports, which can handle 10GE LAN/10GE WAN services. Other interfaces are GE optical ports, GE electrical interfaces or FE electrical ports which can handle GE or FE services.

A.If the software version of the new SCC board is later than equipment version, clear the database of the SCC board, and then downgrade the software on the SCC board to the same version as the equipment.

B.After the SCC board is removed, the BD_STATUS and COMMUN_FAIL alarms are reported. After the new board goes online, these alarms need to be manually cleared.

C.If the software version of the new SCC board is earlier than the equipment version, upgrade the software on the SCC board to the same version as the equipment.

D.In the case of the 1 + 1 hot backup of the SCC board, replacing the control board does not affect services when the active/standby switchover is performed.

A.10.255. 0.1

B.172.128.0.1

C.192.168.0.1

D.10.0.0.1

A.Service transmission direction: SDH signals-> LSX->M40V-> OBU1-> FIU-> Line

B.Service receiving direction: Line->FIU-> OAU-> M40V-> LSX-> SDH signals

C.OSC receiving direction: Line-> FIU-> Sc2

D.Service transmission direction: SDH signals-> LSX-> M40V-> OBU1-> Line

A.OPUk performs client signal mapping, rate adjustment and rate adaptation in the transmission direction.

B.ODUkT calculates BIP-8 and writes to TCHi.

C.ODUkP is responsible for calculating BIP-8, writing PM, GCC1/2 and other overheads.

D.OTUk is responsible for calculating BIP-8, writing to SM, GCCO, FAS, MAFS, etc.