VoiBRIDGE / VoxiPlus INSTALLATION MANNUAL
© 2008 TOPEX S.A.
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8 GLOSSARY
CDMA
– Acronym for
Code Division Multiple Access
. A digital wireless technology used in radio
communication for transmission between a mobile phone and a radio base station. CDMA was
developed by Qualcomm, and commercially introduced in 1995. It enables the simultaneous
transmission and reception of several messages, each of which has a coded identity to distinguish it
from the other messages.
Ethernet
- Standard for wired computer networks. Ethernet networks are connected by cables,
switches and hubs, and move data around. For wired connections, TOPEX VoiBridge provides one
Ethernet port for the local network (LAN) and one port for the WAN network.
GUI
– Acronym for
Graphic User Interface
. It is an interface between the human being and the
computer (a way of interworking between the man and the computer) which use windows, icons and
menus and can be handled through the mouse or the keyboard. GUI is the opposite end of the
command line interface (for example MS-DOS or Linux in console mode), which uses text only and
can be accessed only from a keyboard. In GUI, the icons and the windows could be moved (dragged
with the mouse) and the objects and programs can be easily opened with the mouse.
H.323
- recommendation from the ITU-T, that defines the protocols to provide audio-visual
communication sessions on any packet network. It is a part of the H.32x series of protocols which
also address communications over ISDN, PSTN or SS7. H.323 is commonly used in Voice over IP
(VoIP, Internet Telephony, or IP Telephony) and IP-based videoconferencing.
IP
– Acronym for
Internet Protocol
. It is the protocol from TCP/IP that directs the way data is sent
from one computer to another on the Internet. The messages are divided into data packets, routed
from the sender network to the receiver network and there re-assembled in the right order to re-create
the original message. Because a message is divided into a number of packets, each packet can, if
necessary, be sent by a different route across the Internet. These data packets can arrive in a
different order than the order they were sent in. The Internet Protocol just delivers them. It's up to
TCP protocol (Transmission Control Protocol) to put the packets back in the right order.
GSM
– Acronym for
Global System for Mobile Communications
- The dominant digital cellular
technology for mobile telephone networks in Europe. GSM (formerly called "Groupe Speciale Mobile")
utilizes the 905-915 MHz and 950- 960 MHz reserved spectrum to provide roaming capability across
18 countries in Europe. GSM 1900, the North American version of GSM, allows the standard to be
used in the 1,900 MHz frequency band, which the U.S. Federal Communications Commission and
Industry Canada have allocated for personal communication services (PCS).
LAN
- Acronym for
Local Area Network
(computer network that spans a relatively small area). A
group of computers, workstations and associated devices that share a common communications line
or wireless link and are located in a relatively limited area, typically inside the same office building.
The communications link that interconnects these computers allows any device of the network to
interact with any other from the same network.
PBX
- Acronym for
Private Branch eXchange
. The PBX is a small, enterprise version of the larger
central switching office of the phone company. A PBX is a private telephone switch. It is connected to
groups of trunks (junctions) from one or more central offices and to all of the telephones at the
location (subscribers, local extensions) served by the PBX. Current exchanges are in fact PABX,
automated PBX, which don’t require a human operator to route the calls.
PSTN
- Acronym for Public Switched Telephone Network(s).
SIP
– Acronym for
Session Initiation Protocol
. A protocol proposed standard for initiating,
modifying, and terminating an interactive user session that involves multimedia elements such as
video, voice, instant messaging, online games, and virtual reality. It is one of the leading signaling
protocols for Voice over IP, along with H.323. SIP clients traditionally use TCP and UDP port 5060 to
connect to SIP servers and other SIP endpoints. SIP is primarily used in setting up and tearing down
voice or video calls.
VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
