Editing Traffic Service Position System (section)

==Features==
The TSPS system utilized special [[analog transmission|analog]] trunks that originated at [[Class 5 telephone switch|Class 5]] end office circuit switch systems and [[Class 4 telephone switch|Class 4]] toll access circuit switch systems that were connected to Class 3 primary toll circuit switch systems such as the 4A-ETS/PBC and [[4ESS switch]] systems.  The TSPS system did not perform switching between the originating end office switch and the toll switch for the subscriber voice path.

The TSPS system included the "Remote Trunking Arrangement" (RTA) feature that consolidated the trunk connection at the originating switch and provided a switched connection to a [[Switchboard operator|telephone operator]] 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.  Operator consoles initially used [[nixie tube]] displays that were quickly replaced by [[light-emitting diode]] displays due to reliability issues.

The TSPS system was replaced by the Operator Service Position System (OSPS) feature package developed for the [[5ESS switch]]ing system. During the era of TSPS systems, calls to mobile and marine radiotelephone customers were initially handled by operators at a Special Operator Service Treatment cord switchboard.  Operator assisted calls to international destinations were handled by "Code 10" and "Code 11" operators generally co-located at special gateway international switching systems.