Xblue Networks X-50 - Manual (Page 245)

XBLUE Networks 245
Glossary of Terms
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IP Address – Internet Protocol Addresses – IP addresses are assigned two different ways, static or Dynamic.
Static - A static IP Address is used by any device that establishes infrastructure, such as a router, a severer, a
printer, faxes etc. Internal or Intranet IP address are easy to establish and program. However, Internet static IP
addresses are usually purchased at a premium but they are required when several endpoints are “pointed” to
the same location such as a voice server.
Dynamic - A dynamic IP Address is used by any device that does not establish infrastructure, such as a client
endpoint. A client endpoint (laptop for example) moves freely, so it is assigned a temporary IP Address from a
device such as a server or router. These addresses are “leased” to the device for a period of time and are sub-
ject to change.
ISP – Internet Service Provider – An Internet Service Provider (ISP) is generally either a telephone or cable com-
pany which provides a high speed connection to the World Wide Web (www).
IETF – Internet Engineering Task Force – The task force wrote the specification SIP.
Jitter - defines the lack of synchronization caused by mechanical or electrical changes. The most common cause for
jitter is lack of bandwidth.
LAN – Local Area Network – A LAN allows network devices to share and access files through a series of wires known
as a “Network”. Generally, a LAN uses one DHCP Server, it is “small” in size (geographically) like a home or office, and
it does not require any external IPS to transmission data between endpoints.
Latency - is an important indicator of the dynamic performance of a Virtual Acoustic Environment (VAE). In a VAE,
the end-to-end latency refers to the time elapsed from the beginning of an event or action, such as a voice transmis-
sion, until the receiving party hears the signal. High latency causes poor reproduction of a voice transmission, whereas
lower latency results in higher voice quality.
LDAP – Lightweight Directory Access Protocol – A directory is a set of objects with similar attributes organized
in a logical and hierarchical manner. The most common example is the telephone directory, which consists of a series
of names (either of persons or organizations) organized alphabetically, with each name having an address and phone
number attached.
MAC – Media Access Control – The MAC address is a unique, level 2, identifier which is required on all devices that
connect to a network. This address is usually assigned at the factory where the device is built. Unlike an IP or Subnet
Mask address, the MAC address does not change, which is critically important when using Dynamic Host Configuration
Protocol (DHCP). A MAC address consists of 6 octets in hexadecimal format and looks like xx:xx:xx:xx:xx:xx (00-01-
43-65-a0-e4).