请教爱立信RBS2206基站B小区的故障，机柜两个，载频配置：原4/6/4，现压缩为4/5/4，OMT读取B小区的故障信息如下： 1、故障代码：AO TS2-0 EC1：3 AO TS5-2 EC1：3 AO TS6-2 EC1：3 AO TS7-2 EC1：3 故障代码说明如下：
TRA PCU (REMOTE TRANSCODER PCU COM LOST)
The speech/data frames coming from the BSC to the TS are
missing or corrupt.
This is most likely a fault in the BSC (for example no TRA
allocated, no connection in Group-Switch, and so on) or in the A-
bis transmission path. 2、故障代码：TRXC-5 I1A：19，故障代码说明如下（备注：交换机房已经把B小区TRU-5槽位数据删除）：
RESET DXU LINK LOST
After different DXU resets (see related faults) the TRU looses
contact with the DXU, which provokes it to do a reset and send
this message.
For information only, not a fault.