A system that performs operations system functions (OSFs), that is, supports the processing of information related to operations, administration, maintenance, and provisioning for the telecommunications networks.
Note: An operations system performs surveillance and testing functions to support customer access maintenance. [After T1.210-1989]

The functional entity that provides access to an operator service from an exchange in the network. The operator service may be co-located with the exchange or located elsewhere. [T1.661-1997]

The company accepting the billing information, initiating the validation process, and recording the details of the call.

A set of services including toll and assistance, listing services and intercept, associated with the originating connection network capability. [After T1.661-1997]

A stored program electronic system associated with one or more toll switching systems which provides centralized traffic service position functions for several local offices at one location. [47 CFR Pt.36-A]

A general term, ordinarily applied to trunks between manually operated switchboard positions and local dial central offices in the same wire center. [47 CFR Pt.36-A]

Open Pluggable Edge Services

Operational Expenditure

Acronym for operations security.

See fiber amplifier, optical repeater.