Glossary:

ATIS Telecom Glossary

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PX

1. Abbreviation for private exchange; See PBX.
2. Abbreviation for peak envelope power.

QA

Abbreviation for quality assurance.

QAM

Abbreviation for quadrature amplitude modulation.

QC

Abbreviation for quality control.

QCI

QoS Class Identifier

QCIF

Abbreviation for quarter common intermediate format.

QOSM

Quality of Service Management

QPSK

Abbreviation for quadrature phase-shift keying.

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