User's Manual Part 2

Appendix M: Acronyms and Glossary
APCD-LM043-8.0 (DRAFT C) 333
Spread Spectrum A communication technology in which the transmitted signal
occupies a much greater bandwidth than the information
bandwidth. The benefits of spread spectrum are generally
lower spectral power density, and immunity to noise,
interference and jamming.
Static Route A route that is manually entered into a routing table by a crafts
person or network operator.
Subscriber In the context of LMS, it is the individual or entity associated
with an EUM.
TCP (Transmission
Control Protocol)
The connection-oriented transport layer protocol that provides
reliable, full-duplex data transmission in TCP/IP networks.
Telnet A terminal emulation program for TCP/IP networks.
UDP (User Datagram
Protocol)
Part of the TCP/IP protocol suite, which provides a way for
applications to access the connectionless features of IP. It
provides for exchange of datagrams without
acknowledgements or guaranteed delivery.
Unicast A message sent by one network device to another network
device.
User Authentication In LMS, the secure mechanism through which a user
identification is verified.
User Authorization The secure mechanism by which a user is approved to use
LMS services. To illustrate, an EUM may be authenticated but
denied service because of the delinquent payment of a bill.
VoIP (Voice over IP) The ability to carry normal telephony-style voice over an IP-
based internet, with POTS-like functionality, reliability and
voice quality.
Term Definition