Comtech EF Data CDM-570/L Vipersat Parameter Editor - Manual (Page 83)

Appendix A - Glossary A-1
A
P P E N D I X
G
LOSSARY
A
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.
B
Base
Modem
The main component in a satellite communications modem that consists of a
circuit board with the modem hardware and firmware and the associated 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 transmission speed. See also Kb/s & Mb/s.