toll office

(redirected from toll/tandem office)

toll office

[′tōl ‚ȯf·əs]
(communications)
A telephone central office which serves mainly to terminate and interconnect toll lines and various types of trunks.

toll office

A telephone central office that generates toll call transactions. Toll accounting used to be performed in tandem offices, but today is mostly generated in the end offices. See tandem office and end office.