RedMax AN-100U, User Manual, Page: 99 / 106

Red MAX
™
Base Station
user manual
Doc. #70-00058-01-01-DRAFT Proprietary Redline Communications © 2006 November 29, 2006
Page 99 of 106
Term Acronym Definition
Data Link Layer - Layer 2 in the Open System Interconnection (OSI)
architecture; the layer that provides services to
transfer data over the transmission link between open
systems.
DB - A ratio expressed in decibels.
dBi - A ratio, measured in decibels, of the effective gain of
an antenna compared to an isotropic antenna.
DBm - Decibels relative to a milliwatt
Directional
Antenna - An antenna that concentrates transmission power into
one direction.
Download
Interval Usage
Code DIUC An interval usage code specific to a downlink (from
RedMAX base station base station to subscriber).
Downlink - The direction from the RedMAX base station base
station to the subscriber.
Downlink
Channel
Descriptor DCD A medium access control layer message that
describes the physical layer characteristics of a
downlink channel.
Downlink Map DL-MAP A medium access control layer message that defines
a map with burst start times. DL-MAP is the main
message that defines synchronization of Subscriber.
Based on the map Subscriber read and parse the
Downlink information.
Downstream - Flow from base station to subscriber.
Downstream
Classifier - Assigns packets to downstream service flows.
Dynamic Host
Configuration
Protocol DHCP An Internet protocol used for assigning network-layer
(IP) addresses dynamically.
Dynamic service - The set of messages and protocols that allow base
station and subscriber to add, modify, or delete the
characteristics of a service flow.
Encryption - For the purposes of privacy, the transformation of data
into an unreadable format until reformatted with a
decryption key.
Ethernet - A LAN architecture using a bus or star topology
FCS FCS Frame Check Sequence.
File Transfer
Protocol FTP (Client and Server): Protocol implementing RFC 959
and running in NOC-S as Client and BSC as Server
for transferring/replicating configurations files needed
by local DHCPs.
Frame - A structured data sequence of fixed duration used by
some physical layer specifications. A frame may
contain both an uplink sub frame and a downlink sub
frame.
Frequency
Agnostic - Operating independently of the radio frequency
selection.