Motorola SURFboard SBG901, User Manual

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B Glossary 124
This document is uncontrolled pending incorporation in PDM
TERM DEFINITION
synchronous The SBG901 uses synchronous timing for upstream data
transmissions. The CMTS broadcasts timing messages that bandwidth
is available. The SBG901 reserves data bytes requiring x number of
mini-slots. The CMTS replies that it can receive data at a specified time
(synchronized). At the specified time, the SBG901 transmits the x-
number of data bytes.
symbol rate
Also known as baud rate. This is a measure of the number of times per
second a signal in a communications channel varies or makes a
transition between states (states being frequencies, voltage levels or
phase angles). Usually measured in symbols per second (sps).
SYSLOG A de-facto UNIX standard for logging system events.
T
TCP Transmission Control Protocol on OSI transport layer four provides
reliable transport over the network for data transmitted using IP
(network layer three). It is an end-to-end protocol defining rules and
procedures for data exchange between hosts on top of connectionless
IP. TCP uses a timer to track outstanding packets, checks error in
incoming packets, and retransmits packets if requested.
TCP/IP Transmission Control Protocol/Internet Protocol suite. It provides
standards and rules for data communication between networks on the
Internet. It is the worldwide Internetworking standard and basic
communications protocol of the Internet.
TFTP Trivial File Transfer Protocol is a very simple protocol used to transfer
files.
TKIP Temporal Key Integrity Protocol
Transparent bridging A method to enable all hosts on the wired Ethernet LAN, WLAN, and
USB connection to communicate as if they were all connected to the
same physical network.
transport layer Layer of the OSI concerned with protocols for error recognition and
recovery. This layer also regulates information flow.
trunk Electronic path over which data is transmitted.
two-way A cable system that can transmit signals in both directions to and from
the headend and the subscriber.