E******* GSM performance measurements for LAPD

[oswe]

hi guys, I cant find help about LAPD PM (perf measurements)
I have this counters per Cabinet (RXOTG)

• Transmitted LAPD information frames (CTRIFRAME).
• Received LAPD information frames (CRECIFRAME).
• Retransmissions (CRETRANSM)
• Received bad frames (CBADFRAME) are aborted frames, frames with cyclic redundancy check (CRC) error and frames with wrong byte count
• Protocol errors (CPROCOLERR)
• Link failures (CLINKFAIL)
• Link overloads (COVERLOAD)

im using CLINKFAIL but im not sure of the correctness
anyone worked with this ??