regional Bell operating company; RBOC
A historical U.S. telecommunications term referring to one of the local phone companies created after the breakup of AT&T. Used in computing and telecom contexts.
After the breakup of AT&T in 1984, the regional Bell operating companies provided telephone services in each region.
Compound of 地域 (region), ベル (Bell, from the Bell System), and 電話会社 (telephone company). A direct translation of the English term.