Specifications
Appendix C - Glossary Administration Manual (SIP/MGCP Version)
AT-VP504E FXS 133
Logical Link Control (LLC)
Layer 3 Layer 3 refers to the Network layer of the commonly-referenced
multilayered communication model, Open Systems Interconnection
(OSI). The Network Layer is concerned with knowing the address of
the neighboring nodes in the network, selecting routes and quality of
service, and recognizing and forwarding to the transport layer incoming
messages for local host domains.
A router is a layer 3 device, although some newer switches also
perform layer 3 functions. The Internet Protocol (Internet Protocol)
address is a layer 3 address.
Light Emitting Diode
(LED)
A semiconductor diode that emits light when a current is passed
through it.
Local Area Network
(LAN)
Data-only communications network confined to a limited geographic
area, with moderate to high data rates. See also WAN.
Management
Information Base
(MIB)
MIBs are specifications containing definitions of management
information so that networked systems can be remotely monitored,
configured and controlled.
Management Server It includes a web-based provisioning client, a provisioning server, and
SNMP proxy server used to manage all agents connected to the
system. The Management Server provides Gateway provisioning,
Monitoring, and Numbering Plan.
Media Access Control
(MAC) Address
A layer 2 address, 6 bytes long, associated with a particular network
device; used to identify devices in a network; also called hardware or
physical address.
Media Gateway
Control Protocol
(MGCP)
An application programming interface and a protocol for controlling
Voice over IP (VoIP) Gateways from external call control elements,
where the intelligence is.
Mu (ยต)-Law The PCM (Pulse Code Modulation) voice coding and companding
standard used in Japan and North America. See also
A-Law
.
Network A group of computers, terminals, and other devices and the hardware
and software that enable them to exchange data and share resources
over short or long distances. A network can consist of any combination
of local area networks (LAN) or wide area networks (WAN).