OCC - Other Common Carrier

Not part of the original AT&T system.

Off Hook

The signal that the telephone receiver has been lifted (activated). Originating off hook activates a dial tone on switched networks. Destination off hook completes a call (and activates minute-by-minute billing for long distance calls).

One Plus - 1+

Customer ability to access the long distance service provider of their choice by first dialing 1, then the long distance number. Equal Access guaranteed by the 1982 AT&T MFJ. 1+ is an outbound service where the calling station pays the charges.

Operator Service Call - OSC

A call that is placed through a human or automated operator (0+).

Operator Service Provider - OSP - OS Provider

The vendor that supplies operator service.

Outbound

Outward Sending - Call Originating - Dialing Out

Telecommunications glossary

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Telecommunications Glossary "O"

International
Callback | Business Opportunity

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