136
BGAN 9201 User Manual
Header Compression
: A header is the component of a data packet that precedes the data that
you are sending. The header contains information such as source and destination address,
error checking and other administrative details. In most data types this does not noticeably
affect the data transmission rates. However in multimedia applications such as voice and
video, the header can significantly affect performance.
Inmarsat recommends that you switch on header compression for multimedia applications,
such as video.
IP Address
: An Internet Protocol address, or IP address, is a number that identifies the computer
that is sending or receiving information transmitted over the Internet. An IP address is made
up of four groups of numbers between 0 and 255, separated by periods. For example,
207.115.79.4 is an IP address. In the BGAN system, IP addresses can be dynamic or static.
Dynamic IP Address
: A dynamic IP address is a temporary address that is assigned by your
Internet Service Provider (ISP) when you connect to the Internet. If you do not need a
permanent IP address, Inmarsat recommends that you obtain a dynamic IP address.
Normally, individual users of the Internet use a dynamic IP address.
Static IP Address
: A static IP address is assigned permanently, and is used every time you
connect to the Internet. Normally, companies and other organizations that have their
own networks use static IP addresses.
MSN
: Mobile Subscriber Number, for ISDN call types.
PDP
: Packet Data Protocol.
SIM Card
: Your Service Provider supplies you with a Subscriber Identification Module (SIM) Card
or a Universal Mobile Telecommunications System Subscriber SIM (USIM) Card.
A SIM or USIM Card is a card commonly used in a GSM phone. The card holds a microchip
that stores information and encrypts voice and data transmissions, making it extremely
difficult to listen in on calls. The USIM Card also stores data that identifies the caller to the
Service Provider.
Standard Connection
: A standard connection is charged by volume of data sent. The
bandwidth you are allocated depends on terminal type and network availability, but is
always „best effort‟, that is, you are allocated bandwidth depending on your requirements
and the requirements of other users of the BGAN network, or BGAN Terminal. This connection
class is suitable for most data types, other than multimedia.
Streaming
: A streaming connection is charged by time. You are charged for the amount of time
the connection is active. Streaming enables multimedia data, such as video, to be sent in a
continuous data stream and converted into sound and pictures. The bandwidth required for
a streaming connection is difficult to predict, and depends on factors such as length of
connection and number of receivers.
Symmetrical Rate
: The rate at which streaming data is transmitted, in kilobits per second (Kbps).
This rate applies to transmitted (uplink) and received (downlink) data.
Desired Symmetrical Rate
: From the drop-down list, choose the desired data rate for your
Streaming connection. This can be 32 Kbps, 64 Kbps, 128 Kbps, 176 Kbps or 256 Kbps. This
figure is guaranteed, unless the connection cannot meet this requirement because of
bandwidth restrictions. In this case the rate defaults to the minimum symmetrical rate.
Minimum Symmetrical Rate
: From the drop-down list, choose the minimum data rate that
you are prepared to accept for your Streaming connection. This can be 32 Kbps, 64
Kbps, 128 Kbps, 176 Kbps or 256 Kbps. This rate must be lower than the Desired
Symmetrical Rate. If the connection cannot meet this requirement, an error message
displays.
TE
: Terminal Equipment, e.g. your computer or ISDN phone.
Traffic Flow Template
: A Traffic Flow Template, also called an Application Template, is a series of
data filters such as QoS (Quality of Service), PDP Context and security settings, that allow the
Core Network to classify packets received from an external network into the correct PDP
