NavCom SR-7120 Rev.A - Manual (Page 111)

Safari Network User Guide
C-3
Interface Standard: a description of a port’s configuration
for handling data. The SR-7100 supports the
following port Interface Standards: Asynchronous
RS232, Asynchronous RS422, Synchronous RS422,
and Ethernet.
Local Area Network (LAN): A computer network that
spans a relatively small area. Most LANs are confined
to a single building or group of buildings. However,
one LAN can be connected to other LANs over any
distance via telephone lines and radio waves. A
system of LANs connected in this way is called a wide-
area network (WAN).
Most LANs connect workstations and personal
computers. Each node (individual computer) in a LAN
has its own CPU with which it executes programs, but
it also is able to access data and devices anywhere on
the LAN. This means that many users can share
expensive devices, such as laser printers, as well as
data. Users can also use the LAN to communicate
with each other, by sending e-mail or engaging in
chat sessions.
Outbound: away from the system NCU.
Port Expander Module: the device used to present the
radio user with indicators, control switches, and data
interface ports. This device is usually connected to the
Radio Module.
Port Speed: the rate at which data is sent and received
across a port. A Port Speed of 19.2 Kbps indicates a
send rate of 19.2 Kbps and a receive rate of 19.2
Kbps. Port Speed is independent of the Data
Throughput of the Service.
Radio Module: the device used to transmit and receive
signals over radio frequencies. This device is usually
connected to the Port Expander Module.