Also tandem switch. Refers to a telco switching point that passes traffic between the local exchange carrier and interexchange carrier [long distance carrier].
Toll Office - Class 4 Switch. Hierarchical interconnection for Class 5 End Offices.
U.S. term. See Tandem exchange.
Switch that functions as a gateway between local central office exchanges within a Local Access Transport Area (LATA).
A telephone company's major switching center for the switched telephone network that interconnects local central offices.