OMA - Open Mobile AllianceThe OMA was formed in the summer of 2002 by a number of companies including the world's leading mobile operators, device and network suppliers, inform... View more
OMA-DM - Open Mobile Alliance Device ManagementOMA Device Management can through a Management Authority remotely set parameters, conduct troubleshooting servicing of terminals, install or upgrade s... View more
OMC - Operations Maintenance CentreAn Operations and Maintenance Centre is an element within a network management system responsible for the operations and maintenance of a specific ele... View more
OML - Operations and Maintenance LinkOML is used for supporting network management procedures (transferring O&M messages).... View more
ONF - Open Networking FoundationThe ONF have been a key figurehead in the promotion and standardization of SDN (Software Defined Networks). In particular, the ONF standardize OpenFlo... View more
ONU - Optical Network UnitAn Optical Network Unit is a device used to terminate a fibre optic line and is often situated close to the subscriber's site. This terminology is use... View more
OPC - Operation CodeThis is a TCAP variable and is used to identify the information flow contained within the CSL (Component Sublayer) of a TCAP message. The typical info... View more
OPC - Originating Point CodeWithin a SS7 network the point codes are numeric addresses which uniquely identify each signalling point. The OPC identifies the sending signalling po... View more
OPEX - Operational ExpenditureGeneral term which describes the day to day cost of running a network, encompassing a wide variety of contributing factors.... View more
Optical BudgetThis is a parameter used in the design of optical transmission networks. It is the difference between output power level of the source and the receive... View more
ORB - Object Request BrokerWithin an Object based communication system, an ORB keeps track of the actual addresses of all defined objects and thus is used to route traffic to th... View more
OS - Operating SystemThis can be described as the software within a computer which controls basic functions. Examples of operating systems include Windows, DOS and Linux. ... View more
OSA - Open Service AccessOSA (Open Services Access) is a joint initiative between the 3GGP, ETSI and the Parlay Group which is designed to facilitate the design and implementa... View more
OSI - Open System InterconnectionRefers to a 7 layer reference model developed by the OSI. ... View more
OSI Reference ModelA seven layer reference model in which communication functions are broken down into one of seven layers, each layer providing clearly defined services... View more
OSPF - Open Shortest Path FirstOpen Shortest Path First is a link state, hierarchical IGP (Interior Gateway Protocol) routing algorithm. Features supported by OSPF include least cos... View more
OSS - Operations Support SystemOperations Support System can be described as a network management system supporting a specific management function, such as fault, performance, secur... View more
OTD - Orthogonal Transmit DiversityAn optional method of transmission of the Forward CDMA Channel that utilizes two antennas, each transmitting a fraction of the code symbols. It is use... View more
OTDOA - Observed Time Difference On ArrivalOTDOA is a subscriber location technique which was introduced in Release 9 of the 3GPP specifications. OTDOA is based on the mobile taking TDOA measur... View more
OTI - Originating Transaction IdentifierThe OTI is a TCAP variable and is used to associate request and response messages within the TCAP Transaction Sublayer. ... View more