only as required for a short duration at the beginning of a call to obtain billing information or at the end of a call in which the caller requested "time and charges".

The TSPS system provided a temporary switched connection to a toll operator who helped facilitate calls requiring human assistance such as person-to-person, collect, third-party-billed, and hotel billing. The TSPS system supported up to seven "Chief Operator Groups" (COGs) with each COG supporting up to 31 operator consoles, with two operator positions per console, for