VEGA MoRoS Modem - ISDN 1.3 User Manual
Page 84
Glossary
MoRoS Modem - ISDN 1.3
84
GSM:
The Global System for Mobile communications is a mobile network for lan-
guage and data transmission.
ICMP:
The Internet Control Message Protocol is a protocol which is often used for
the control of a network. The program “ping” for example uses ICMP.
IP-Address: The Internet Protocol Address is the IP address of a device inside a network
at which it can be reached. It consists of four bytes and is packed decimal
(for example 192.168.1.1).
ISP:
The Internet Service Provider can be dialled up via a switched dial-up circuit
(e.g. by an analogue modem or ISDN-TA). Then the ISP provides an internet
access via this switched line.
LAN:
The Local Area Network is a network of computers which are located rela-
tively close together.
MAC Address:
The Media Access Control Address. A MAC is part of an Ethernet in-
terface. Each Ethernet interface has a unique number throughout the
world called the MAC Address.
MSN:
Multiple Subscribers Number. Any devices being busy at a SO bus require a
terminal identification in the form of the terminal number.
Net Mask:
It defines a logical grouping of IP addresses in network address and device
addresses.
Network Address: It consists of the overlapping of the IP address and of the net mask. It
always ends with “0”. The net mask (e.g. 255.255.255.0) is binarily overlaid
on the IP address (e.g. 192.168.1.1), the remaining „visible“ part of this
overlapping (masquerade) is the network address (here: 192.168.1.0).
Network Rules:
They decide how the different data packets are handled inside a
network device. Thus data packets can for example be locked for or by cer-
tain network users or they can even be redirected.
PAP:
The Password Authentication Protocol is often applied to PPP connections.
Port:
(1) Socket on the switch to which Ethernet devices are connected
(2) Component of a socket for data connections
Port forwarding: Network rules which redirect data packets from certain senders to cer-
tain receivers of a network.
PPP:
The Point to Point Protocol is a protocol connecting two machines via a se-
rial line in a way that they are able to exchange TCP/IP packets.
Router:
This is a machine which renders possible inside a network that the arriving
data of a protocol are forwarded on to the provided destination net or sub-
net.
SCN:
The Service Center Number is the call number of the processor which ac-
cepts memos (->SMS) via the GSM net and forwards them on to the receiv-
ers.
Server:
A device which places services to the disposal of other devices (Clients), e.g.
Web server.