Meaning of CENTRAL OFFICE (C.O.) in English

A common carrier switching center in which trunks and loops are terminated and switched. Note: In the DOD, "common carrier" is called "commercial carrier." Synonyms exchange , local central office, local exchange , local office, switching center (except in DOD DSN [formerly AUTOVON] usage), switching exchange, telephone exchange. Deprecated synonym switch .

Telecommunication standard terms English vocab.      Английский словарь стандартных телекоммуникационных терминов.