This reports the raw current values of the K1 and K2 overhead bytes this device is transmitting on the protection channel toward the far end, the transmit-side counterpart to cApsStatusK1K2Rcv. Comparing what this device is sending here against what the far end reports receiving (via its own equivalent object) helps confirm the protection-line overhead signaling path itself is functioning correctly, separate from any actual traffic fault. For example, an admin troubleshooting a mode mismatch reported via cApsStatusModeMismatches would check this transmitted value to confirm this device is sending the K2 mode bits it believes it's configured for, ruling out a local misconfiguration before suspecting the far end.