Motorola SURFboard SBG901, Руководство пользователя

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B Glossary 106
This document is uncontrolled pending incorporation in PDM
TERM DEFINITION
Authentication A process where the CMTS verifies that access is authorized, using a
password, trusted IP address, or serial number.
Authorization
Part of the process between a CMTS and the cable modem or gateway
to enable Baseline Privacy.
auto-MDIX
Automatic medium-dependent interface crossover detects and corrects
cabling errors by automatically reversing the send and receive pins on
any port. It enables the use of straight-through wiring between the
SBG901 Ethernet port and any computer, printer, or hub
B
bandwidth The transmission capacity of a medium in terms of a range of
frequencies. Greater bandwidth indicates the ability to transmit more
data over a given period of time.
Baseline Privacy
An optional feature that encrypts data between the CMTS and the
cable modem or gateway. Protection of service is provided by ensuring
that a cable modem or gateway, uniquely identified by its MAC
address, can only obtain keys for services it is authorized to access.
Baud The analog signaling rate. For complex modulation modes, the digital
bit rate is encoded in multiple bits per baud. For example, 64 QAM
encodes 6 bits per baud, and 16 QAM encodes 4 bits per baud.
BER
The bit error rate is the ratio of the number of erroneous bits or
characters received from some fixed number of bits transmitted.
binary
A numbering system that uses two digits, 0 and 1.
bit rate The number of bits (digital 0s and 1s) transmitted per second in a
communications channel. It is usually measured in bits per second bps.
BPKM Baseline Protocol Key Management encrypts data flows between a
cable modem or gateway and the CMTS. The encryption occurs after
the cable modem or gateway registers to ensure data privacy across
the RF network.
bps Bits per second