Comtech EF Data VIPERSAT File Streamer v1.2.x - Manual (Page 51)

Appendix A - Glossary A-7
R
RF Radio Frequency – A generic term for signals at frequencies above those used
for baseband or IF.
RFC Request For Comment – The de-facto Internet standards issued by the Internet
Engineering Task Force (IETF).
RIP Routing Information Protocol
RS-232 A common electrical/physical standard issued by the IEEE used for point to
point serial communications up to approximately 115 kb/s.
RS-485 A common electrical/physical standard issued by the IEEE used for multi-drop
serial communications.
Rx Receive
S
SCPC Single Channel Per Carrier – A satellite communications technique where an
individual carrier is transmitted to a single destination.
SNMP Simple Network Management Protocol – A protocol defining how devices from
different vendors may be managed using a common network management
system.
SPL Synchronous Party Line – An electrically isolated interface between indoor and
outdoor equipment used in VIPERSAT satellite systems. See also APL.
Star
Topology
A network topology which, if drawn as a logical representation, resembles a star
with a hub at the center.
STDMA Selective Time Division Multiple Access – A multiple access technique where
users time-share access to a common channel with variable-sized time slots
allocated on usage.
Streamload
Protocol
A proprietary Vipersat data streaming protocol used by VFS for transferring
files over a Vipersat satellite network.