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MOCET IP3022 SOHO IP Deskphone User Guide
G.723.1
6.4/5.3 kbps MP-MLQ codec (low quality, low bandwidth, high
processor load due to the compression)
G.726
40/32/24/16
ADPCM
codec (good quality, medium bandwidth, low
processor load)
G.729
8 kbps ACELP codec (medium quality, low bandwidth, high
processor load)
IEEE
Institute of Electrical and Electronics Engineers, New York,
www.ieee.org. A membership organization that includes engineers,
scientists and students in electronics and allied fields. It has more
than 300,000 members. The IEEE is an international organization
that develops standards for hundreds of electronic and electrical
technologies for computers and communications. The organization
uses a series of numbers, like the Dewey Decimal system in
libraries, to differentiate between the various technology families.
IP (Internet
Protocol)
Internet Protocol is located at 3rd layer of ISO network model. A set
of rules used to send and receive messages at the Internet address
level. 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 32-bit number that identifies each sender or receiver of
information that is sent across the Internet. An IP address has two
parts: an identifier of a particular network on the Internet and an
identifier of the particular device (which can be a server or a
workstation) within that network. A number used to identify the
location of a host device. It is expressed in numeric dot notation
(e.g. 202.203.27.31).
IP Centrex
This service is offered by the LEC to the end user. The feature-rich
Centrex line offers the same features and benefits as a PBX to a
customer without the capital investment or maintenance charges.
The LEC charges a monthly fee to the customer, who must agree to
sign a term agreement. And the above service is thru VoIP called IP
centrex.
Jitter
Jitter refers to fluctuations in transmission delay time. In the case of
voice data, conversations are packaged into packets (IP
packetization) 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".
MAC
Medium Access Controller (MAC) : The IEEE 802.11 Standard
encompasses the physical layer (PHY) and the lower portion of the
data link layer. The lower portion of the data link layer is often
referred to as the Medium Access Controller (MAC) sublayer. Every
wireless 802.11 device has its own specific MAC address hard-
coded into it. This unique identifier can be used to provide security
for wireless networks. When a network uses a MAC table, only the
802.11 radios that have had their MAC addresses added to that
network's MAC table will be able to get onto the network.
