TOPEX BYTTON HSDPA
User’s Manual
pag. 83
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, videostreaming, 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 3Gnetworks.
Access Point
- The network hub device or “base station” for a wireless network. An access point (AP) is
a device that allows wireless clients to connect to other wireless clients and it acts as a bridge between
several local wireless clients and a another network, such as 3G mobile broadband network or wired
Ethernet. BYTTON HSDPA acts as an AP and can be server to as many as 32 WiFi clients (notebooks,
desktop PCs with wireless cards or USB adapters, PDAs, wireless peripherals and so on)
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). HSDPA technology fully qualifies for mobile broadband connection!
CDMA
– Acronym for Code Division Multiple Access. Advanced communications technology that is a
driving force behind 3G wireless networks around the globe. CDMA ensures excellent quality of voice
signal, without noise or interferences, high rate of data transmission and permits a uniform distribution of
energy in the emitted bandwidth. UMTS makes use of the W-CDMA technology, wideband CDMA.
Client
– wireless clients are the “mobile terminals” connected to your local WiFi network. These WiFi
clients may be notebooks, desktop computers, PDAs, IP phones or other wireless devices.
CLIP -
Acronym for
Calling Line Identity Presentation.
This feature allows the ID (phone number) of
the caller to be displayed during the call. It is a service of the phone network. For end-users, this service
is handy in order to screen incoming calls, prepare the specific response, greeting the caller by name or
looking up for missed or unanswered phone calls. BYTTON HSDPA can use the CLIP facility to identify
the subscribers who called and route the incoming calls according to their Caller ID.
CLIR
- Acronym for Calling Line Identification
Restriction
. Feature that restrict the identification of your
caller ID to the other party. This hides your identity from callers with Caller ID feature. You may activate
this function on the Bytton equipment , thus disabling the sending out of Caller ID.
DISA
– Acronym for
Direct Inward System Access.
This function allows an outside caller to directly
access a local subscriber of the phone exchange by using DTMF codes.
The typical application is when you call directly a local subscriber without need for a human operator at
the phone exchange. The BYTTON HSDPA equipment makes use of DISA-like routing to manage both
incoming and outgoing calls without need for a human operator. For example a local subscriber may dial
(using DTMF codes) a mobile number via the BYTTON HSDPA equipment.
DTMF
- Acronym for
Dual Tone Multi Frequency,
also known as "touch tone".
Advanced method for
dialing a number, instead of the older Pulse mode.
When you press a key on the keypad a combination
of two audio frequencies is sent on the line. DTMF capability is important because it allows access to a
wide range of interactive voice applications. The BYTTON equipment uses DTMF dialing to transmit the
numbering from local subscribers to the mobile networks. Also, it uses dialing in DTMF mode to ensure
phone connections without need for an operator at the PBX.
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 HSDPA.
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
