Remote TC drop can be due to
– Abis link failure
– TRE or SUM card failure
– BSC board failure
– transcorder board failure
try to see which sites are getting a high drop due to RTC. If only one cell, suspect a TRE problem. If 3 cells from one sector, suspect Abis failure (or SUM ?).
If all cells in BSC, suspect BSC problem
If all cells in transcoder, suspect transcoder issue.