Open Network Computing. A distributed applications architecture promoted and controlled by a consortium led by Sun Microsystems.
OOAD
Object-Oriented Analysis and Design
OOB
Out Of Band. Usually used in practice in phrases like "I need to access the router out of band", meaning not over the network but over a serial line to the console port. Out-of-band access is usually needed when the network is down. See the NETS OOB page.
OOS
Out Of Service. One of several card
states that may be reported by a "show equipment" command in an ADVA
RayExpress optical switch.
Optical Supervisory Channel. An OC-3 speed lambda that runs at 1310nm and is used for management (not data) in Movaz RAYexpress wave division multiplex boxes.
OSCLOL
Optical Supervisory Channel Loss Of Light. One of several alarm types that may be reported
by a "show alarm" command on an ADVA RayExpress optical switch. See the RayExpress Alarm and Troubleshooting Guide.
OSG
Office Systems Group (now part of USS)
OSI
Open Systems Interconnection. An international standardization program to facilitate communications among computers from different manufacturers. See ISO.
