Appendix D Glossary - Comtech EF Data Vipersat SLM-5650A User Manual

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LOSSARY
ACK
A signal used in computing and other fields to indicate acknowledgement, such
as a packet message used in TCP to acknowledge the receipt of a packet.
ARP
Address Resolution Protocol – A protocol for a LAN device to determine the
MAC address of a locally connected device given its IP address. See also MAC.
ASR Automatic Switch Request – A switch request message generated by older
Vipersat modems (e.g., CDM-570/L) that is sent to the VMS to establish a new
satellite link or adjust bandwidth between source and destination IP addresses.
Base
The main component in a satellite communications modem that consistes of a
Modem circuit board with the modem hardware and firmware and the associeated inter-
faces.
BER Bit Error Rate (sometimes Ratio) – A measure of the number of data bits
received incorrectly compared to the total number of bits transmitted.
bps
bits per second – A measure of the bit rate or transmission speed of a digital
communication link. See also kbps and Mbps.
A p p e n d i x D - G l o s s a r y
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P P E N D I X
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