Cables to Go DOCSIS Cable Modem manual Qpsk, Snmp, Tcp/Ip, Tftp, Udp

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

Tuner

Converts TV channels to a fixed lower frequency (6 ~ 40 MHz)

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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