NavCom SR-7120 Rev.A - Manual (Page 112)

Safari Network User Guide
C-4
Remote Unit (RU): a radio used in a remote location or
vehicle. It is programmed and controlled by the
Network Control Unit.
Service: the ability to exchange data among two or more
units within a system.
Service (or Channel) ID: a number used to uniquely
identify a specific data exchange.
Service Type: a particular variety of data exchange. The
SR-7100 System offers four different Service Types.
They are: point-to-point, broadcast, multi-point
network, and Ethernet WLAN.
Spread Sequence: a method of radio communication in
which a spreading code is used to encode data onto a
radio carrier frequency.
Subnet: A portion of a network that shares a common
address component. On TCP/IP networks, subnets are
defined as all devices whose IP addresses have the
same prefix. For example, all devices with IP addresses
that start with 100.100.100. would be part of the
same subnet. Dividing a network into subnets is
useful for both security and performance reasons. IP
networks are divided using a subnet mask.
Subnetwork Control Unit (SCU): Controls and manages
its associated remotes and bandwidth utilization
through channel assignment, frame synchronization,
frequency synchronization, packet assembly and
packet routing to create semi-autonomous cells.
Dynamic bandwidth assignment allows unutilized
channels to be reassigned based on channel routing
requirements, semi-independent operation for traffic
within the SCU cell, internet access point for the cell
allowing multiple internet access points in a single
network, and seamless roaming of remote units
between cells.