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Glossary
Internet telephony
VoIP
IP
short for Internet Protocol
The IP Internet Protocol is the most important basic protocol
for the control of data exchange in local networks and in the
Internet. The Internet protocol works without a connection; in
other words, data packets are transmitted from the sender to
the recipient without previous consultation. The addresses of
the recipient and the sender in the data packets are given as
IP addresses.
IPv4
short for Internet Protocol version 4
IPv4 is currently the conventional Internet protocol.
IPv4 addresses are 32 bits long, such that IPv4 offers an ad-
dress space of 2
latest estimates suggest that the last IPv4 addresses will be
assigned by the beginning of 2012.
The successor protocol to IPv4 is IPv6.
IPv6
short for Internet Protocol version 6
IPv6 is the successor protocol to IPv4.
IPv6 addresses are 128 bits long. This means that IPv6
makes approximately 340 undecillion (~ 3.4 x 10
dresses available. Each private user can be allotted over
18 quintillion public IPv6 addresses from her or his Internet
service provider.
The dearth of addresses in IPv4 is only one of the reasons for
introducing IPv6. IPv6 also offers additional advantageous
characteristics in the framework of communication within IP
networks.
FRITZ!Box 3370
(see
glossary)
32
IP addresses, or just over four billion. The
129
36
) IPv6 ad-
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