Hirschmann BAT 11b, Management Manual

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Glossary
118
BAT 11b
Release 1.0 03/04
• PCMCIA
The PCMCIA (Personal Computer Memory Card International
Association) is an industrial association founded in 1989 which
produces and sells I/O cards with the size of credit cards, e.g.
WLAN cards.
• Ping
Ping means Packet INternet Grouper and is a tool which serves to
check whether a computer is online. Ping is used to search for
errors in a network (troubleshooting). The person who carries out
the check waits for replies of other computers.
• RJ-45
A plug-in connector as it is also used for ISDN telephones. It
serves to connect computers via Ethernet. In contrast to ISDN
where only 4 pins are used, all 8 pins are used in the case of an
Ethernet cable.
• Roaming
In WLANs with several cells, clients can move freely through the
cells. When doing so, they can log out at one access point and log
on to another without the user noticing it. This capacity is called
roaming.
• SOHO
Small Office/Home Office
• Static IP Address
A permanently configured IP address, in contrast to dynamic IP
addresses.
• Subnet Mask
A method to divide several IP networks into a number of sub-
groups or subnetworks. The mask is a binary pattern which has to
correspond to the IP addresses in the network. By default, the
subnet mask is 255.255.255.0. In this case, 254 different IP
addresses could occur in a subnetwork, from x.x.x.1 to x.x.x.254.
• TCP, Transmission Control Protocol
A method used in the IP protocol to transfer messages as units
(datagrams) between the network subscribers within a LAN or
WLAN. While IP is concerned with the packet transfer via IP
addresses, TCP controls which packets belong together. TCP is a
connection-oriented protocol which transfers acknowledgments
on the receipt of the packets to the sender.