User manual

Glossary-12 Adit 3200 - Release 1.6
Glossary
SAP
SAP Service Access Point.
signal A generated electrical impulse that is a change in voltage to trigger an event.
Simple Network
Management Protocol
(SNMP)
SNMP is the most common method by which network managements applications can
query a management agent using a supported MIB (Management Information Base).
SNMP operates at the OSI application layer.
spanning tree Spanning Tree Protocol is a link management protocol that provides path redundancy while
preventing undesirable loops in the network. For an Ethernet network to function properly,
only one active path can exist between two stations.
SRV SRV is an resource record that specifies the locations of servers.
subnet mask 32-bit quantity indicating which bits in an IP address identify the physical network
T1 Trunk Level 1. A digital transmission link with a total signaling speed of 1.544 Mbps. T-1
is a standard for the digital transmission in North America.
telnet An Internet standard protocol that enables a computer to function as a terminal working
from a remote computer
TDM Time Division Multiplex. A technique for transmitting a number of separate data, voice
and/or video signals simultaneously over one communications medium by quickly
interleaving a piece of each signal one after another.
Terminal Endpoint
Identifier (TEI)
Up to eight devices can be connected to one ISDN BRI (or PRI) line. The TEI defines, for
a given message, which of the eight devices is communicating with the Central Office
switch. In general, more than one of the eight may be communicating.
TFTP Trivial File Transfer Protocol.
ticks The distance between two networks, measured in time increments. Ticks may be used to
designate primary and secondary routes to the same network.
traffic The load of packets carried by a network or portion of a network. Heavy traffic slows down
the response time of the individual packets.
trunk A communication line between two switching systems.
tunneling To provide a secure, temporary path over the Internet.
V.90 The standard for full-duplex modems sending and receiving data across phone lines at up
to 56,600 bps, approved by the International Telecommunication Union (ITU) in February,
1998.
Virtual Private Network
(VPN)
A software defined network offering the appearance, functionality and usefulness of a
dedicated private network, at a price savings.
VC MUX Virtual Channel Multiplexer