Allied Telesis AT-VP504E FXS User Manual page 21

Appendix A - Glossary
Light Emitting Diode
(LED)
Local Area Network
(LAN)
Network A group of two or more computer systems that are linked.
Off-hook A line condition caused when a telephone handset is removed from its
On-hook A line condition caused when a telephone handset is resting in its
Packet Group of bits transmitted as a complete package on a packet-switched
Port Network access point, the identifier used to distinguish among multiple
Private Branch
Exchange (PBX)
Protocol Defines a common set of rules and signals that computers on the
Public Switched
Telephone Network
(PSTN)
Server A computer or device on a network that works in conjunction with a
Session Initiation
Protocol (SIP)
Single Network
Monitor Protocol
(SNMP)
AT-VP504E FXS
A semiconductor diode that emits light when a current is passed
through it.
Data-only communications network confined to a limited geographic
area, with moderate to high data rates. Contrast with WAN.
cradle.
cradle.
network.
simultaneous connections to a host.
A small to medium sized telephone system and switch that provides
communications between onsite telephones and exterior
communications networks.
network use to communicate.
The local telephone company network that carries voice data over
analog telephone lines.
client to perform some operation, for example a Windows NT Server.
SIP is a simple signaling protocol for Internet conferencing and
telephony.
SNMP is the protocol governing network management and the
monitoring of network devices and their functions.
User's Manual (SIP/MGCP Version)
17