As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT CREW RECEIVED A SATCOM CHIME FROM DISPATCH CREW UNABLE TO ANSWER SATCOM CALL DUE TO NO SATCOM PROMPT ON FMC SCREEN. ACFT GROUNDED. CYCLED SATCOM CIRCUIT BREAKER P-18-2 D14, IAW FIM TASK 23-15-00-23-801. SAT PROMPT NOW PRESENT ON BOTH MCDU. OPS OK SEAM C.