The structure of the network is as bellow :
When we plug the PRI canble into the interface of E1 on AR161FV. Next step we have to check the physical link is connected correctly( When connected correctly, the window should print the port power and the state goes up message to the terminal) . but we use the "display voice trunk-group trunk-group-name trunk-circuit state brief" . founded the state is not idle . so it means the PRI trunk is fail.
1) Log in voice view, and enter into the E1 interface view, use the order as below :port ve1 0/0/0
2) check the trunk-group , find the state is fault
3) Input the order, disabled CRC4,use the order as below: undo crc4 . Input the order reuser the CRC4 again(when the device of AR161 working,the configuration recover procedure, the board power on in advance ,and then deliver the configeration ),use the order as below: crc4 enable
4) Input the order as below,check the PRI trunk state,if it is ok , the state should be Idle .
display voice trunk-group trunk-group-name trunk-circuit state brief