As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED VIA ACARS, LOST COMMUNICATIONS WITH ATC. DISPATCHED CALLED ATC BY PHONE AND RELAYED ALL COMMUNICATIONS VIA ACARS. AN EMERGENCY WAS DECLARED AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE WAS DISPATCHED TO AIRCRAFT TROUBLESHOT RESET POWER AND PERFORMED OPERATIONAL CHECK OF SYSTEM OPERATIONAL CHECK WAS GOOD. MAINTENANCE ALSO REMOVED AND REPLACED FLIGHT ATTENDANT HANDSET AND CRADLE AS A PRECAUTION.