Glossary

Explore our library of thousands of telecoms terms and acronyms defined for on-the-job reference or learning new material.

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OSS

Operations Support System

OTD

Orthogonal Transmit Diversity

OTDOA

Observed Time Difference On Arrival

OTI

Originating Transaction Identifier

OTN

Optical Transport Network

OTT

Over The Top

P-CCPCH

Primary Common Control Physical Channel

P-CSCF

Proxy - Call Session Control Function

P-GW

Packet Data Network Gateway

P-RNTI

Paging

P-SCH

Primary Synchronization Channel

P-TMSI

Packet - Temporary Mobile Subscriber Identity

PABX

Private Automatic Branch Exchange

PACA Call

Priority Access and Channel Assignment Call

PACCH

Packet Associated Control Channel

Packet

Packet error Ratio

Packet Filtering

Packet Idle Mode

Packet mode

PAGCH

Packet Access Grant Channel

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