TOPEX BYTTON HSDPA
User’s Manual
pag. 84
DNS Server Address
(Domain Name System) - DNS allows Internet host computers to have a domain
name and one or more IP addresses. A DNS server keeps a database of host computers and their
respective domain names and IP addresses, so that server your ISP has assigned.
Dynamic DNS
- service that allows clients connecting to the Internet with a dynamic IP address to be
able to use applications that require a static IP address. The Internet Service Provider changes the IP
address of the users, but there are applications that work only with static (fixed) IP addresses. Dynamic
DNS makes it possible for sites on the Internet to establish connections to you computer without need
for tracking the IP address themselves. DDNS is useful both for wired or wireless (such as UMTS) dialup
connection where at each connection a new address is assigned, and for DSL services where the
address is changed occasionally by the ISP.
Domain Name Resolution -
The resolving of a domain name. Internet applications don’t communicate
with domain names such as google.com or topex.ro, instead they use IP addresses (for example
193.226.61.95 or 216.239.39.99). Domain Name Resolution is the process (transparent for the user) of
converting domain names into corresponding IP addresses. Every operating system has routines that
deal with resolution of domain names.
Encryption
- This provides wireless data transmissions with a level of security.
ESSID
- Acronym for Extended Service Set ID. ESSID is one type of SSID (the other being BSSID). The
ESSID is the identifying name of a wireless network. You can use a name that describes the network,
such as „PurchasingnetworkA”, „BYTTON_UMTS” or „InternetCafeDoris”. This allows one wireless
network to be clearly distinguishable from another. Also, this will ensure that only the users that have
configured the same ESSID may access your WiFi network - you must have the same ESSID entered
into the gateway and each of its wireless clients. You can also hide ESSID, to ensure that your Access
Point is not visible to others. This increase the security – since the Wireless LAN network is invisible
from outside, it will be more difficult for potential hackers to find out that there is a WiFi network available.
Ethernet
- Standard for wired computer networks. Ethernet networks are connected by cables and hubs,
and move data around. For wired connections, BYTTON HSDPA provides Ethernet 10/100 ports, four for
the local LAN and one for WAN.
Firewall
- System designed to prevent unauthorized access to or from a private network. The firewall
determines which information passes in and out of and prevents anyone outside of your network from
accessing your computer without authorization and possibly damaging or viewing your files. Any
company with an intranet that allows its workers access to the wider Internet must use a software or
hardware firewall to prevent outsiders from accessing its own private data resources and for controlling
what outside resources its own users have access to. Here the firewall is software a set of related
programs (residing on the gateway server) that protect the resources of the local (internal) network.
FXS
- Acronym for Foreign Exchange Station. The FXS phone interface supplies ring, voltage, and dial tone
for a “Station”, that may be an analog phone, a modem, a fax machine, or any analog device of the final
user. The FxS interface of the BYTTON HSDPA equipment may be used for connection either to an
analog trunk of the PBX or directly to a standard fixed phone.
FXO
- Acronym for Foreign Exchange Office. The Office phone interface connects to the public phone
exchange (central office - CO), or a FxS board of the PBX. The FXO device gets power supply from the
central battery and disk tone services. The FxO interface of the BYTTON equipment is used to connect
the device to a local extension line (local subscriber) of the PBX. Both FxS and FxO interfaces use two
wires.
Gateway
- A network point that manages all the data traffic of your network, as well as to the Internet
and connects one network to another. BYTTON is also gateway, since it interfaces between the local
networks (wired or wireless) and the HSDPA mobile network or another broadband connection.
GRE
– Acronym for Generic Routing Encapsulation. GRE is used as a tunneling protocol, which can
encapsulate a wide variety of protocol packet types inside IP tunnels. IP tunneling using GRE protocol
allows easy creation and expansion of a Virtual Private Network using the 3G mobile network. Topex
BYTTON allows you to use two different GRE tunnels.
IP Address
– Short from Internet Protocol address. The numerical address of a network device or
resource as expressed in the format specified in the Internet Protocol (IP). In the current addressing
format, IP version 4, the IP address is a 32-bit (4 bytes) sequence divided into four groups of decimal
numbers separated by periods ("dots"). Each number can be zero to 255. These four groups of numbers
look like “127.0.0.1” or „213.154.120.170”. The four numbers in an IP address are used in different ways
to identify a particular network and a host on that network.
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.
