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O-BCSM (Originating - Basic Call State Model)
O-CSI (Originating - CAMEL Subscription Information)
O-IM-CSI (Originating - IP Multimedia - CAMEL Subscription Information)
O&M - Operations & Maintenance
OBEX - Object EXchange Protocol
Object
OCSP - Online Certificate Status Protocol
OFB - Output Feedback
OFDM - Orthogonal Frequency Division Multiplexing
OFDMA - Orthogonal Frequency Division Multiple Access
OFTEL - Office of Telecommunications
OMA - Open Mobile Alliance
OMC - Operations & Maintenance Centre
Omphalogramma
ONU - Optical Network Unit
OPC - Originating Point Code
OPC (Operation Code)
Optical Budget
ORB - Object Request Broker
OS - Operating System
OSA (Open Service Access)
OSA SCS (Service Capability Server)
OSI - Open System Interconnection
OSI Reference Model
OSPF - Open Shortest Path First
OSS - Operations Support System
OTD - Orthogonal Transmit Diversity
OTI (Originating Transaction Identifier)
Out of Band Signalling
Overhead
Overlay Network

 

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