Siemens SINAUT MD741-1 System Manual page 131

EDGE
EGPRS
GPRS
GSM
HTTPS
IP address
SINAUT MD741-1
C79000- G8976-C212
local computer which is registered with the DynamicDNS provider, the
external computer uses the hostname of the local computer as the
address. In this way a connection is established with the responsible
DNS (Domain Name Server) in order to look up there the IP address
which is currently assigned to this hostname. The IP address is
transmitted back to the external computer, and then used by it as the
destination address. This now leads precisely to the desired local
computer.
As a rule, all Internet addresses are based on this method: First a
connection is established to a DNS in order to determine the IP
addresses assigned to this hostname. Once that has been done, the
IP address that was "looked up" is used to establish the connection to
the desired remote station, which can be any Web site.
EDGE (= Enhanced Data Rates for GSM Evolution) refers to a method
in which the available data rates in GSM mobile phone networks are
increased by introducing an additional modulation process. With
EDGE, GPRS is expanded to become EGPRS (Enhanced GPRS), and
HSCSD is expanded to become ECSD.
EGPRS stands for "Enhanced General Packet Radio Service", which
describes a packet-oriented data service based on GPRS, which is
accelerated by means of EDGE technology.
GPRS is the abbreviation for "General Packet Radio Service", a data
transmission system of GSM2+ mobile phone systems. GPRS systems
use the basestations of GSM networks as their wireless equipment,
and their own infrastructure for coupling to other IP networks, such as
the Internet. Data communication is packet-oriented; the Internet
Protocol (IP) is used. GPRS provides data rates of up to 115.2 KBit/s.
GSM (= Global System for Mobile Communication) is a standard that is
used worldwide for digital mobile phone networks. In addition to the
voice service for telephone calls, GSM supports various data services,
such as fax, SMS, CSD and GPRS. Depending on the legal
requirements in the various countries, the frequency bands 900 MHz,
1800 MHz or 850 MHz and 1900 MHz are used.
HTTPS (=HyperText Transfer Protocol Secure) is a variant of the
familiar HTTP, which is used by any Web browser for navigation and
data exchange in the Internet.
In HTTPS the original protocol is supplemented with an additional
component for data protection. While in HTTP data are transmitted
unprotected in plain text, in HTTPS data are transmitted only after an
exchange of digital certificates, and in encrypted form.
Every host or router on the Internet / an intranet has a unique IP
address (IP = Internet Protocol). The IP address is 32 bits (= 4 bytes)
long, and is written as 4 numbers (each in the range from 0 to 255),
which are separated from each other by dots.
An IP address has 2 parts: the network address and the host address.
All hosts of a network have the same network address, but different
host addresses. Depending on the size of the network in question - a
Glossary
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