User's Manual

Hughes 9350 BGAN Terminal User Guide 39
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 uniquely identifies the
computer accessible over a TCP/IP-based LAN or the Internet that is sending or receiving
information. An IP address is a 32-bit numeric address written as four numbers, separated by
periods and each number is between 0 and 255. For example, 207.115.79.4 is an IP address.
In the BGAN system, IP addresses for the Network and the TE can be dynamic or static.
Network Dynamic IP Address: A network dynamic IP address is a temporary address that is
assigned by your BGAN Service Provider when you connect to the BGAN Network. If you
do not need a permanent Static IP address, most Service Providers use a dynamic IP
address. Some Service Providers provide a private Network IP address not routable
within the Internet) and others provide a routable public IP address.
Static IP Address: A static IP address is assigned by Service Providers to BGAN Users when the
USIM is provisioned. This static IP address is used every time you connect to the BGAN
network and is associated with a specific Username and Password.
DHCP Address: Local IP address that is assigned by the UT DHCP server to the TE once
connected to the UT. This is a private IP address that is not routable within the Internet.
Terminal Local IP Address: IP address of the UT to access the web MMI and talk to the UT via
Telnet. This address is configurable by the User.
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 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 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): Terminal equipment refers to the piece of equipment that is
connected to the BGAN UT (e.g. laptop, video equipment, phone, etc.)
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
Context. When incoming data arrives at an access point in the core network, a packet
classifier will make a PDP Context selection based on the Traffic Flow Template, and map the
incoming data packets into the PDP Context with the correct QoS attributes. The use of a
Traffic Flow Template allows multiple PDP Contexts to be associated with the same PDP
address.