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Q.931 CCITT standard for ISDN access.
Q.SIG standard for signalling between PBXs in a private network
- possible alternative to DPNSS.
QAM Quadrature Amplitude Modulation - cable channel system:
16 QAM carries 27Mbit/s downstream, 500Kbit/s upstream;
256 QAM carries 36Mbit/s downstream, 10Mbit/s upstream.
(see QPSK).
QF Qantas Airways
QoS Quality of Service - broadband DOCSIS vsn 1.1 extension.
QPSK Quadrature Phase Shift Key - alternative to QAM.
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