WaveRider LMS4000, Руководство пользователя

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256 APCD-LM043-4.0
Table 101 LMS4000 Network Glossary
Term Definition
LMS4000 RF Subsystem The RF Equipment associated with an LMS4000, including
CCUs, RFSM, antennas, and transmission lines.
Bandwidth Manager The entity in the LMS4000 that uses various algorithms to
manage end-user access to the network interface bandwidth,
based on subscribed level of service.
Broadcast (Message) A message sent by one network device to all other devices
connected to the network.
Cell Size The nominal radius of the geographic area served by a single
CAP, within which EUMs can reliably receive service.
Channel Generally, the medium though which information is
communicated. In wireless communications, the channel is
usually defined by the center frequency, modulation type, and
occupied bandwidth.
CLI (Command Line
Interface) In contrast to a graphical user interface, a CLI is a
configuration and control interface based on keyboard-entry
commands and responses.
Console Port Typically, the 9–pin RS-232 serial port on an LMS device to
which a terminal or laptop computer is connected, for the
purpose of configuring or controlling the device.
Configuration Terminal The configuration terminal is provided for the purpose of
configuring or controlling a device directly through its console
port.
DNS (Domain Name
System) A database system that translates domain names into IP
addresses. For example, waverider.com is converted into
207.23.187.242.
DSSS (Direct-Sequence
Spread Spectrum) A form of spread-spectrum communications that uses a high-
speed code sequence, along with the information being sent,
to modulate the RF carrier.
Ethernet Switch In the context of LMS, the devices that provide data link layer
Ethernet connection between the router, NMS, UPS, and back
haul equipment at the LMS4000, and the CCUs, RFSM, back
haul equipment and UPS at the CAP.
Host Name The common name given to network devices to make them
more easily identifiable by network operators and maintenance
personnel.
Gateway A device connecting two networks that use different
communications technologies or protocols; for example, an IP/
Telephony Gateway provides a connection between an IP
network and a telephone network.