88 © Hypercom EMEA Ltd. 2011 Glossary
IP
Internet Protocol. This is the method whereby data is transmitted over
networks such as the Internet (may also be expressed as TCP/IP).
IP address
A number represented in the form XXX.XXX.XXX.XXX which identifies a
device on the Internet (for example: 193.129.71.130). These numbers are
the networking equivalent of telephone numbers.
MAC address
Media Access Control address. An individual address given to every piece
of Ethernet networking equipment. This address is always marked on
Hypercom equipment containing such an address. Do not confuse with
Message Authentication Certificate; a certificate used in the UKCA
Standard 70 message protocol.
PABX
Private Automatic Branch eXchange. This is usually found as part of a
larger telephone system, which requires the user to press a number on
their telephone to make an external call.
TCP port
A number representing a service at a particular IP address.
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