User's Manual

SPEEDLAN 9000 Series Installation and Operation User Guide Version 3.03
Glossary-17
Server
A computer that is responsible for tracking, as well as receiving and sending requests from other computers
connected to it (on the same network).
Sidelobe
These are 20 dB lower than the main lobe, and it is critical from a performance standpoint that antennas are
aligned with respect to the main lobe. Failure to do so may cause the radio to be interfered with or the radio
may interfere with other systems.
Signal level
This is the value of the signal level at the receiving end of the transmission path.
Simple Network Management Protocol (SNMP)
The standard protocol for TCP/IP network management that has the most common worldwide use.
Site ID (Unique)
This is the alphanumeric site address given to the terminal by you (the user).
Spread Spectrum Technology (SST)
A method of encoding (with a PN code) a digital signal in a transmitter so as to spread it over a wide range
of frequencies so that the average signal power is close to the noise floor. The same code is known to the
receiver and is used to decode the signal. Keeping the code secret provides communications security.
Star
A topology (in the K2 polling protocol category) that includes point-to-point or point-to-multipoint activity, as
long as those routers are within line-of-sight of each other.
Submask
This term allows you to mask section(s) (depending on the class specified) of the octets in the network
address. Each octet used in the subnet mask is assigned to a data link. The leftover octet(s) are assigned to
the remaining nodes.
Subnet
This term allows you to create multiple networks within one Class A, B, or C network. Each data link (octet)
contains its own unique identifier also known as the subnet. Also, each node on the same data link must
belong on the same subnet as well.