Precidia ipocket232, User Manual

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23-CML000293 iPocket232 Technologies Inc. A-1
Appendix A:Glossary of Terms
and Acronyms
ARP
Address Resolution Protocol. A TCP/IP protocol used to convert an IP address
into a physical address, such as an Ethernet address. Defined in RFC826.
AT
Attention , modem command prefix.
BpP
Bytes per Packet.
bps
Bits per second. The standard measure of data transmission speeds.
CGI
Common Gateway Interface . A standard for running external programs from a
World Wide Web HTTP server.
CPU
Central Processing Unit.
CRC
Cyclic Redundancy Checking. An error checking method that uses a 16 or 32-bit
polynomial that is derived from, stored and transmitted, with a block of data, in
order to detect corruption.
CSU
Channel Service Unit. A device that performs protective and diagnostic
functions for a telecommunications line.
CTS
Clear To Send. A modem signal line (pin 8 of DB-9 connectors), used for
hardware flow control. It is the counterpart to Request To Send (RTS). When
the remote end is ready to receive data, it sends a CTS signal to the local
computer to start transferring data.
DB-9
DB-xx is the designation for a series of port connectors for attaching devices to
computers. DB-9 specifically is a standard 9-pin, D-shell connector, used for
RS232 serial communications.
DCD
Data Carrier Detect. A modem signal line (pin 1 of DB-9 connectors).
DCE
Data Communications Equipment. It is the interface that a modem or other serial
devices use to exchange data with a computer.