KVH Industries TracPhone V3 HTS User Manual page 148

Ping
Software utility used to check a network connection. Sends a test
packet to the designated address and reports how long it takes to
receive a response.
Polarization
Orientation of a satellite signal. Circular polarization, which has a
"corkscrew" propagation path, consists of left-hand (LHCP) and right-
hand (RHCP) signals. Linear polarization consists of vertical and
horizontal signals offset by 90 degrees.
POP3
Post Office Protocol. Email protocol by which a client retrieves all
available messages from a remote mail server and saves them locally.
Messages are normally deleted from the server upon download.
Protocol
Standard that establishes strict rules for how data is communicated
over a network.
Proxy
A server that controls client access to another server.
PSTN
Public Switched Telephone Network. Worldwide telephone network
carrying analog voice signals.
Return Link
Communication path from the antenna to the satellite. Another term
for "Uplink."
RF
Radio Frequency.
RJ45
Registered Jack 45. Eight-wire network cable connector for LANs.
Similar to a telephone jack.
TracPhone V3-HTS User's Guide
Glossary
161