As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN CHIME WOULD NOT STOP DINGING IN FLIGHT. COULD NOT HEAR ATC AND CREW COULD NOT ESTABLISH COMM BETWEEN THE TWO OF US. RETURNED BACK TO BTR AS A RESULT. C/A-FOUND PROBLEM TO BE THE FORWARD RAMP CALL PUSH BUTTON. REPLACED THE FORWARD RAMP CALL PUSH BUTTON IAW AMM 23-51-10, OPC GOOD. PASSENGER ADDRESS & CABIN INTERPHONE SYSTEM IAW AMM 23-31-00-700-801.