MOCET M22 - Manual (Page 97)

IP2032 ADMINISTRATOR’S MANUAL
Terminology
10/100BASE-T
It’s a LAN transmission line specification stipulated by IEEE. Transmission speed
is 10 or 100 Mbps and the modulation technique is base-band modulation. The
cable uses unshielded twisted pair, similar to a telephone wire. 10BaseT is an
IEEE standard (802.3) for operating 10 Mbps Ethernet networks (LANs) with
twisted pair cabling and a wiring hub.
Auto answer
In telephone call control: The capability of a machine to answer a ringing
telephone without human intervention.
CODEC
The CODEC (CODER/DECODER) is a standard through which voice information
can be encoded into data or decoded back to voice information. Both a Coder and
Decoder are necessary on both sides of the telephone call since telephone calls
occur simultaneously in both directions. Bandwidth is an extremely important
factor in QOS (Quality of Service). MOS (Mean Opinion Score) is an attempt to
make a quantifiable benchmark of voice quality. Below are examples of the
CODEC, bit rate and mean opinion score: G.711 (toll quality) 64K MOS=4.1,
G.726 16K (32K) MOS =3.8, G.729AB (cell phone quality) 8K MOS=3.7.
DHCP
Dynamic Host Configuration Protocol (DHCP): A utility that enables a server to
dynamically assign IP addresses from a predefined list and limit their time of use
so that they can be reassigned. Without DHCP, an IT Manager would have to
manually enter in all the IP addresses of all the computers on the network. When
DHCP is used, whenever a computer logs onto the network, it automatically gets
an IP address assigned to it.
Diff-Serv
Differentiated Services: The Diff-Serv model divides traffic into a small number of
classes to provide quality of service (QoS). One of QoS in internet.
DNS
Domain Name Service (DNS): A server/program that translates URLs to IP
addresses by accessing a database maintained on a collection of Internet
servers. The program works behind the scenes to facilitate surfing the Web with
alpha versus numeric addresses. A DNS server converts a name like
mywebsite.com to a series of numbers like 107.22.55.26. Every website has its
own specific IP address on the Internet. Typically one or more DNS servers is
located in an IP network.
DTMF
Dual Tone Multi-Frequency (DTMF): The type of audio signals generated when
you press the buttons on a touch-tone telephone. Can be used in inbound (after
voice channel connected) and outbound (before voice channel connected)
application.
Ethernet
International standard networking technology for wired implementations. Basic
10BaseT networks offer a bandwidth of about 10 Mbps. Fast Ethernet (100 Mbps)
and Gigabit Ethernet (1000 Mbps) are becoming popular.
G.711
64 kbps PCM half-duplex codec (high quality, high bandwidth, minimum processor
load)
IP
Internet Protocol (IP) 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.
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