Cables to Go CDM-570L manual Appendix E Glossary

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-232A common electrical/physical standard issued by the IEEE used for point to point serial communications up to approximately 115kb/s.

RS-485A common electrical/physical standard issued by the IEEE used for multi-drop serial communications.

Rx Receive.

S

SCPC Single Carrier Per Channel – A satellite communications technique where an individual carrier is transmitted to a single destination.

SDMS Star Data Management System – VIPERSAT equipment forming the heart of the VIPERSAT system.

SMTP Simple Mail Transfer Protocol - A protocol for exchanging e-mail messages between host computers. See also POP3.

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.

SSPA Solid State Power Amplifier – A high power amplifier used in satellite commu- nications using semiconductor rather than vacuum tube devices. See also HPA.

Star A network topology which, if drawn as a logical representation, resembles a star Topology with a hub at the center.

STDMA An acronym for Selective Time Division Multiple Access

Appendix E - Glossary E-7