CR3851:CELL_BTS_LOOP_RESTORE_FAIL
During the process where the BTS loopback is restored to a normal call, within the BSC, the call processing module initiates a loopback recovery request. If the loopback fails because of various reasons (including failure in TC resource request, failure in Abis resource request, failure in reconnection of transmission channel between Ater interface and Abis interface, and other reasons), a loopback recovery acknowledgement message is returned to the call processing module initiating the loopback recovery. Then, the BSC regards it as a call drop and releases the call directly.
This measurement provides the number of failures to return to normal call from BTS loopback due to various causes.
Integer number or integer.
At the end of the granularity period, this counter is calculated by using the following formula.
Number of Failures to Return to Normal Call from BTS Loopback = [Number of Failures to Return to Normal Call from BTS Loopback (Territorial Resource Request Failure)] + [Number of Failures to Return to Normal Call from BTS Loopback (Others)]