first a Q2CXL was pluged in to slot 9. the configuration downloaded from T2000 to NE.however when the second Q2CXL was pluged in to slot 10 and active standby switch occured, the SCC reported BUS_ERR alarm.
0x0A 0x02 0x18 0x02 0x88
0x0A 0x01 0x08 0x02 0x88
the software version 184.108.40.206
but the services are not interrupted.
checking the board version and alarm shows no abnormality.
since it was new board so it is for sure the board is not faulty. when the board was pulled out and its backplane PIN was checkde it was seen some of the PIN are damged and bowed.
these PINs were damaged during boards plug in.
some PIN on the backplane were damaged.
try to plug in the boards gently.when a board reports BUS_ERR alarm after it was pluged in, check the board to see if it is inserted properly or not and take it out to see if any PINS is damaged.