Explore our library of thousands of telecoms terms and acronyms defined for on-the-job reference or learning new material.
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Offline Charging System
Operating System
Open Service Access
Open System Interconnection
OSI Reference Model
Open Shortest Path First
Operations Support System
Out of Band Signalling
Proxy - Call Session Control Function
Primary Synchronization Channel
Packet - Temporary Mobile Subscriber Identity
PageState
Passkey
Path Loss
Personal Communication System
Packet Data Convergence Protocol
PDP Address
Packet Data Session
Physical Downlink Shared Channel
Packet Data Serving Node
PSTN Emulation Subsystem
Perfect Forward Secrecy
Photonics
Personal Handyphone System
From 2–5 March 2026, meet the Mpirical team and explore industry-led telecoms training. Find us in Hall 4, Stand CS300