INSYS MoRoS GPRS 2.1 PRO, Manual

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MoRoS GPRS 2.1 PRO Glossary
net.
SCN: The Service Center Number is the call number of the processor which
accepts memos (->SMS) via the GSM net and forwards them on to the
receivers.
Server: A device which places services to the disposal of other devices (Cli-
ents), e.g. Web server.
SMS: Short Message Service: Memos can be sent via the mobile network
GSM.
Socket: Data connections coming about by ->TCP or ->UDP work with sockets
for addressing. A socket consists of an IP address and of a port (cp.
Address: Street Name and Street Number)
Switch:
A device which can connect several machines to the Ethernet. Contrary
to a hub the switch is „intelligent“, i.e. it can memorize the MAC ad-
dresses which are connected to a port and it directs the data traffic in a
more efficient way to the individual ports.
TCP: The Transmission Control Protocol is a transport protocol which enables
the data exchange between network devices. It works „connection-
oriented“, which means that the data transmission is secured.
UDP: The User Datagram Protocol is a transport protocol which enables the
data exchange between network devices. It operates „connectionless“,
i.e. the data transmission is unsecured.
URL:
The
“Uniform Resource Locator” refers to the address at which a ser-
vice can be found in the web browser. In this manual the IP address of
the device is mostly loaded as URL.
VPN: Virtual Private Network: Logical connections (so-called tunnels) are set
over existing unsecured networks. The end points of these connections
(„tunnel ends“) and the devices behind can be considered as own logi-
cal network. A very high degree of security of interception and manipu-
lation can be achieved by encrypting the data transmission via the tun-
nels and by mutually authenticating the users of this logical network.
WAN:
The Wide Area Network is a network of terminals being a long way
away from each other.
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