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DOCSIS 1.0/ 1.1 Equivalent Cable Modem
QoS
Quality of Service. Often used to indicate a certain service level guaranty.
QPSK
Quadrature Phase Shift Keying
QPSK is a digital frequency modulation technique used for sending data over coaxial
cable networks. Since it's both easy to implement and fairly resistant to noise, QPSK is
used primarily for sending data from the cable subscriber upstream to the Internet.
RF (Radio Frequency)
A range of the electromagnetic spectrum. Signals in this frequency range can be
transmitted through the air or through a wire. High-speed cable modems use RF
technology to send and receive signals over the cable television network.
RJ45
The type of connector used with twisted-pair Ethernet wiring.
SNMP
Simple Network Management Protocol
TCP
Transmission Control Protocol. This standard provides transmission control for
applications to ensure reliable delivery of data despite changing network conditions,
such as congestion or failure of a segment of the network. TCP is the transport layer
portion of TCP/IP, the most commonly used protocol suite for the Internet.
TCP/IP
Transmission Control Protocol/Internet Protocol. The most commonly used protocol
suite for the Internet; refers to two of its most import protocols, TCP and IP.
TFTP
Trivial File Transfer Protocol
ToD
Time of Date
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Two-Way Cable Modem Access
Cable access that allows data to flow in both the upstream and downstream directions.
UDP
Part of the TCP/IP protocol used to exchange data over the internet
Upstream
Indicates the direction of the flow of a data stream from the user's computer to the
network headend.
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