TOPEX Bytton (HSPA+ / LTE)
ByttonLTE(full)_genericUsermanual_sw306FAS_revN.1.docx
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9 Glossary
3G
– “Third generation” mobile networks, specially designed for high speed data services. The classic
definition of wireless networks that following the 2G systems (GSM) and they offer high speed data
services in addition to the basic voice capability. These 3G mobile communications systems provide an
enhanced range of multimedia services (high speed Internet access, video streaming, etc.). The high data
transfer speed specific to the third generation communications network leads to an increased efficiency of
information transmission, while the real time access to data and information means important savings of
time and money. UMTS is the best known (but not the only one!) of the 3G networks, while HSPA+ is
considered to be 3,5 G or 3G+.
4G
- “Fourth-generation wireless”, the next stage of broadband mobile communications. According to the
ITU,specifications es a 4G network requires a mobile device to be able to exchange data at 100 Mbit/sec.
A 3G network, on the other hand, can offer data speeds as slow as 3.84 Mbit/sec. Several technolgies are
used for 4G data networks, such as using Long Term Evolution (LTE) or Worldwide Interoperability for
Microwave Access WiMAX. Generally OFDM is used -a type of digital modulation in which a signal is split
into several narrowband channels at different frequencies. This is more efficient than TDMA employed in
2G, which divides channels into time slots and has multiple users take turns transmitting bursts or
WCDMA, uesd by 3G, which simultaneously transmits multiple signals on the same channel.
4G does not mean only higher data rates, but also other enhancements - simultaneous connections to
multiple high-speed networks that provide seamless handoffs throughout a geographical area, and better
coverage using femtocells and picocells. As its name suggests, Bytton LTE may be equipped with a LTE
mobile modules, to achieve data rates of up to 100 Mbit/sec.
Broadband
- A type of data transmission in which a single medium (radio, cable or fiber optics) carries
several channels of data at once. Broadband is also associated with high transfer speed (at least 300
Kbps). UMTS technology qualifies for mobile broadband connection, and HSPA+ or LTE are even better!
Device name
- Also known as DHCP client ID or network name. Some ISP provide the customers with
such device names, when using DHCP to assign addresses.
DHCP
(Dynamic Host Configuration Protocol) - This protocol allows a computer (or many computers on
your network) to be automatically assigned a single IP address from a DHCP server. DHCP is available
on Bytton LTE both for LAN (cabled or wireless) and WAN.
DNS
– Acronym for Domain Name System (or Service), an Internet service that translates domain names
into IP addresses. This allows the Internet hosts to use both addresses type domain name (such as
topex.ro or linux.org), and addresses type IP numbers (for instance 192.17.3.4). The domain name
addresses are intended for human users and are automatically converted into IP (numeric) addresses.
Because domain names are alphabetic, they are much easier to remember. The Internet however, is
really based on IP addresses. Every time you use a domain name, therefore, a DNS service must
translate the name into the corresponding IP address.
DNS Server
– computer able to answer to the interrogations in a DNS system. The DNS server maintains
a database that includes the host computers with their domain names and the corresponding IP
addresses. For instance, if you ask the DNS server for the domain name apex.com, it will return the IP
address of the hypothetical company called Apex. DNS servers are linked in their network, so if one DNS
server doesn't know how to translate a particular domain name, it asks another one, and so on, until the
correct IP address is found. When a user enters a domain name into the Internet browser, the user is sent
by the DNS Server to the proper IP address. The DNS server address used by the computers on your
home network is the location of the DNS.
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
