PABX is another term for a telephone system.
The Password Authentication Protocol (PAP) is an authentication
method for connections via PPP. Unlike with CHAP, the username
and password are not sent encrypted.
See Mobile subscriber.
When a call is parked, the connection is held even if the receiver of
the terminal involved is replaced or the cable connection is cut off.
Port and Address Translation (NAT) is used to replace the source
and destination IP addresses and source and destination ports of a
data packet with others. This enables different networks to be con-
nected to one another. See also NAT.
Private Branch Exchange (PABX) is another expression for a tele-
phone system.
See Pulse dialling
A peer is the endpoint of a communication in the network.
See IKE.
With pick-up, calls can be received using code procedures on an in-
ternal terminal that is not part of active call allocation.
The Protocol Independent Multicast (PIM) enables the dynamic rout-
ing of multicast packets on the Internet.
A personal identification number (PIN) can be used to authenticate
oneself on the device so that one can use the device's functions.
Ping is a diagnostic tool that can be used to check whether a partic-
ular host in an IP network can be contacted. A measurement is
taken of the time interval between sending a data packet (ICMP(v6)
echo request packet) and receiving a response packet sent back im-
mediately. This enables the connection quality to be determined.
The Public-Key Cryptography Standards (PKCS) are standards for
public key cryptography. The PKCS are designed for binary and AS-
CII data and are compatible with the X.509 standard. The public
standards are PKCS #1, #3, #5, #7, #8, #9, #10, #11, #12 and #15.
PKCS #10 describes the syntax for certification inquiries.
A public key infrastructure (PKI) is used to issue, distribute and veri-
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Glossary
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