As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO MAKE A CALL ON SATCOM BUT ABLE TO RECEIVE. GOT(HEARD) MESSAGE "THE NUMBER YOU HAVE DIALED IS NO LONGER IN SVC" ALSO HEARD "NO ROUTES FOUND". GROUNDED - YES. PERFORMED SATCOM SYSTEM TEST FOUND NORMAL. ABLE TO CALL AND RECEIVE WITH NO REMARK REF B737-900 AMM 23-15-00-730-801.