O/S

operating system

OBSAI

Open Base Station Architecture Initiative - the OBSAI family of specifications provides the architecture, function descriptions and minimum requirements for integration of a set of common modules into a base transceiver station.

OBSAI

Open Base Station Architecture Initiative

OC-12

Optical Carrier Category 12, 622Mbps

OC-3

Optical Carrier Categorie 3, 155Mbps

OC12

same as OC-12

OC3

same as OC-3

OEM

Original Equipment Manufacturer

OK-1

Open Kernel 1, communication optimized real-time kernel developed by N.A.T., delivered to the market since 1991

Opus

Vocoder used with internet applications, specified in RFC 6716

OS

same as O/S