Off The Air: Refers to the reception of broadcast television signals with a local antenna (either roof-top or set-top) instead of through a cable or satellite dish.
OpenCable: An initiative of the cable industry (through CableLabs) to develop and label a new generation of interoperable digital boxes available through retail stores that will provide subscribers with video, data, and interactive services.
Operating Income: Generally defined as a company’s income before interest payments and taxes.
Optical Amplifier: A device that receives an optical signal and amplifies it and retransmits it as an optical signal to the system.
(OSI) Open System Interconnection: A logical structure developed by the International Standards Organization to enable devices from multiple vendors to communicate with any other OSI-compliant system.
OSP (On-Line Service Provider): An interactive computer service such as Road Runner, @Home, or AOL which provides subscribers with proprietary information as well as access to the Internet (compare with ISP).
(OSS) Operations Support Systems: A system that processes telecommunications information which supports various management functions like network management, inventory control, maintenance, trouble ticket reporting, surveillance and service provisioning.