60
packet
A short fixed
‐
length block of data including a header that is
transmitted as a unit in a communications network.
PCS
Personal Communications Services—A cellular communication
infrastructure that uses a different frequency range than AMPS.
roaming
A cellular subscriber is in an area where service is obtained from
a cellular service provider that is not the subscriber’s provider.
SMS
Short message services—A feature that allows users of a
wireless device on a wireless network to receive or transmit
short electronic alphanumeric messages (up to 160 characters,
depending on the service provider).
system tray
Usually located in the lower right corner of your screen
TIA
Telecommunications Industry Association—A standards-setting
trade organization, whose members provide communications
and information technology products, systems, distribution
services and professional services in the United States and
around the world. Consult www.tiaonline.org.
VPN
Virtual Private Network
