1. Glossary and Terms (Download PDF)

2. A usful list of Acronyms
A B C D E F G H I J K L M N O P Q R S T U V W X    
OADM    Optical Add-Drop Multiplexer
OMAP    Operations, Maintenance and Administration Part (SS7)
OOS     Out-Of-Service (SS7)
OSI     Open Systems Interconnection
OSPF    Open Shortest Path First
OUI     Organizationally Unique Identifier
OXC     Optical Cross-Connect