User`s guide

Cayman 3220-H User’s Guide Glossary
December 2000 9
subnet mask A 32-bit address mask that identifies which bits of an IP address
represent network address information and which bits represent
node identifier information.
synchronous
communication
Method of data communication requiring the transmission of timing
signals to keep PPP peers synchronized in sending and receiving
blocks of data.
T1 link Digital transmission link capable of speeds up to 1544 kilobits per
second.
TA Terminal adaptor. Device that connects a network or terminal to an
ISDN network.
Telnet IP protocol that lets a user on one host establish and use a virtual
terminal connection to a remote host.
twisted pair Cable consisting of two copper strands twisted around each other.
The twisting provides protection against electromagnetic
interference.
UTP Unshielded twisted pair cable.
VJ Van Jacobson. Abbreviation for a compression standard
documented in RFC 1144.
WAN Wide Area Network. Private network facilities, usually offered by
public telephone companies but increasingly available from
alternative access providers (sometimes called Competitive Access
Providers, or CAPs), that link business network nodes.
WWW World Wide Web.
xon/xoff Special characters used for software flow control to regulate
communication between a device and a modem.