Comtech-ef-data Vipersat Circuit Scheduler v3.7.x ArrangeLink Manual de usuario descargar pdf (Pagina 85)

Appendix A - Glossary A-9

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.

SUM Status Update Message – A packet message that is sent by newer Vipersat

modems (e.g., SLM-5650A) to the VMS every sixty seconds, providing status

update and operating parameter information.

TCP/IP Transmission Control Protocol / Internet Protocol – A standard for networking

over unreliable transmission paths. See also UDP.

TDM Time Division Multiplexing – A method of multiplexing that provides the

transmission of two or more signals on the same communication path or chan-

nel, but at different times by utilizing recurrent timeslots.

TFTP Trivial File Transfer Protocol – A simple file transfer protocol used over reli-

able transmission paths. See also FTP.

ToS Type of Service

Tx Transmit.

UDP User Datagram Protocol – A standard for networking over reliable transmission

paths.

UDP

multicast

A multicast transmission using the UDP protocol.

Unicast Transmitting information/data packets to a single destination on the IP network.

Upstream In the direction of the network Hub site.

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Comtech-ef-data Vipersat Circuit Scheduler v3.7.x ArrangeLink Manual de usuario Pagina 85