fy digital certificates for an encryption procedure.
PMTU
The Path MTU (PMTU) describes the maximum packet size that can
be transmitted along the entire connection route without needing to
be fragmented.
Point-to-multipoint
Point-to-multipoint connection is an ISDNB connection. It is used to
connect ISDN terminals. Multiple subscriber numbers (MSNs) are
provided. See also Point-to-point ISDN access
Point-to-multipoint
See Single phone number (VoIP).
Point-to-point
See Point-to-point ISDN access and Direct dial-in (VoIP).
Point-to-point con-
nection number:
See Point-to-point ISDN access
Point-to-point ISDN
access
Point-to-point ISDN access refers to an ISDN connection that is also
called point-to-point. It is used to connect a PBX. A point-to-point
number and a number block are issued. Each of the numbers in the
number block is called a direct dial exception. (Example: Point-
to-point connection number: 1234, number block: 1 - 99, numbers of
the individual extensions: 1234-1, 1234-2, 1234-3, …) See also
Point-to-multipoint connection.
Pool
An address pool is a collection of IP addresses that can be assigned
to the connected clients, e. g. by DHCP.
POP3
The Post Office Protocol Version 3 (POP3) is a transmission pro-
tocol which controls how a client accesses emails from an email
server.
Port
The port number is used to decide the service (telnet, FTP, ...) to
which an incoming data packet should be sent.
POTS
Plain Old Telephone System (POTS) refers to the analogue tele-
phone network.
PPP
The Point-to-Point Protocol (PPP) is a standardised technology for
setting up a direct connection between the network nodes via dial-
up lines.
PPPoA
The Point-to-Point-over-ATM Protocol (PPPoA) enables PPP data
packets to be transported directly over an ATM network.
PPPoE
The Point-to-Point-over-Ethernet Protocol (PPPoE) enables PPP
data packets to be transported directly over an Ethernet network.
Glossary
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