Glossary
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S
SAS
Satellite Access Station. The gateway between the satellites and the worldwide networks such
as Internet, telephone network, cellular network etc.
SDU
Service Data Unit. Also known as a data packet.
SIM
Subscriber Identity Module.The SIM provides secure storing of the key identifying a mobile
phone service subscriber but also subscription information, preferences and storage of text
messages.
SSID
Service Set IDentifier. An SSID is the name of a wireless local area network (WLAN). All
wireless devices on a WLAN must use the same SSID in order to communicate with each
other.
Streaming
A technique for transferring data - such as audio or video clips - so that it is processed as a
continuous stream. With a Streaming connection you are charged by the minute, like for a
telephone connection.
T
TFT
Traffic Flow Template. A packet filter list allowing the Core network and the EXPLORER 700
to classify packets received from the external network into the proper PDP context.
U
UDI
Unrestricted Digital Information. A transparent 64 kbps data channel.
USB
Universal Serial Bus. An interface standard for communication between a computer and
external peripherals over an inexpensive cable using biserial transmission. Mostly used with
keyboards, mice, monitors and printers.
V
VPN
Virtual Private Network. A network that is constructed by using public wires to connect nodes.
You can create networks using the Internet for transporting data, using security mechanisms
so that only authorized users can access the network.
W
WLAN
Wireless Local Area Network. A type of local-area network that uses high-frequency radio
waves rather than wires to communicate between nodes.
