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Series 2000/3000 IDU User's Manual
FTP
File transfer protocol. Used for transferring software, configuration and other files to and
from the IDU on the local network.
Hub
The central terrestrial element of a DVB-RCS system, the hub (or gateway) is responsible
for connecting the satellite network with the Internet or other network and for managing
all aspects of the forward and return satellite links.
IDU
Indoor unit. The unit of the SIT responsible for the ethernet interface with the LAN or
local computer, as well as all aspects of network management. It is connected via two IFL
cables with the outdoor unit.
IDU Name
The IDU name is shown at the top left of each web interface page. It is used to identify
each IDU when managing multiple IDUs simultaneously on the same LAN.
IF
Intermediate Frequency.
IFL cables
Inter-facility link cables.
Indoor unit
See IDU.
Installer page
A section of the IDU web interface used for initial installation of the SIT.
IP
Internet Protocol.
IPSec
Internet security protocol. A standard mechanism for encrypting and protecting data sent
over the Internet.
IPSec key
A string, like a password, used by the IDU as part of the IPSec protocol.
LAN
Local area network.
LNB
The ODU component responsible for receiving forward link signals.
MAC Address
The IDU medium access layer (MAC) address is a unique address permanently assigned
to each IDU. The MAC address is shown at the top left of all web interface pages.
MF-TDMA
Multi-frequency time-division multiple access.
MIB
Management information base.
OAM
Operation, administration and maintenance.
ODU
Outdoor unit. It consists of an antenna, transmitter (BUC), and RF transceiver assembly.
The ODU is connected via two inter-facility link (IFL) cables to the IDU.
OID
Object Identifier.
Outdoor unit
See ODU.
PC
Personal computer.
PCR
Program Clock Reference.
PID
Packet Identification.
Public key
A code exchanged and used by computers that protects data sent and received by a web
browser from unauthorized viewing or modification.
Queue
Data traffic held in an IDU memory buffer. This traffic is received from a local PC or
LAN, and it will be sent over the satellite network return link. The IDU can hold multiple
traffic queues.
RADIUS
A widely-used network authentication protocol. A RADIUS server performs centralized
administration and authentication of SITs in the network. The RADIUS database contains
static user usernames and passwords for SITs.
Revision P4
Page 44
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