Panasonic KX-TDA0480, Руководство по установке

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Glossary
Installation Manual 167
Getting Journal
One of the service functions supported by the KX-TDA0480. The KX-TDA0480 records
the history of completed speech calls. A unit's record of completed calls is retrieved using
the Maintenance Console Software.
Gatekeeper
An H.323 entity that provides address translation, control access, and sometimes bandwidth
management to the LAN for H.323 terminals, Gateways, and MCUs.
Gateway
An H.323 entity which provides real-time, two-way communications between two H.323
endpoints.
Global address
IP address assigned officially for use on Internet.
H.323 Entity
Any H.323 component, including terminals, Gateways, and Gatekeepers.
H.245 Logical Channel
A channel carrying information streams between two H.323 endpoints.
IP (Internet Protocol)
IP protocol is widely used in Internet and LAN networks. The purpose is to deliver data
between computing equipment over the network. The protocol is generally effective but
does not guarantee complete and accurate data communications.
IP Address
A number used to identify the location of a host device. It is expressed in numeric dot
notation (e.g., 202.203.27.31).
Local Area Network
A short distance data communications network used to link together computers and
peripheral devices (such as printers) under some form of standard control.
Jitter
Jitter refers to fluctuations in transmission delay time. In the case of voice data,
conversations are packaged into packets (IP packetisation) and transmitted. Individual
packets can take different routes through the varied networks that comprise the Internet.
When the time interval for the arrival of the packets is not constant the timing fluctuations
that may occur are referred to as "jitter".