BinTec elmeg hybird 120, Справочное руководство

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PPTP The Point-to-Point Tunneling Protocol (PPTP) is a network protocol
for encapsulating other protocols so that they can be transported via
the Internet Protocol (IP) in the form of a tunnel (VPN). PPTP uses
protocol number 1723. The PPTP architecture is divided into two lo-
gical systems. The PPTP Access Concentrator (PAC) and the PPTP
Network Server (PNS). The PAC is usually integrated into the Win-
dows client. It establishes the connection to the PNS and manages
it. The PNS is responsible for routing and controlling the packets re-
ceived by the PNS.
Pre-shared key A pre-shared key (PSK) is a key for an encryption procedure. The
parties shared the key's value beforehand.
Prefix See Network address
Prefix delegation In IPv6 networks, prefix delegation is used to assign the network ad-
dress (prefix) to the router.
Prefix length See netmask.
PRI See Primary Rate Interface.
Primary Rate Inter-
face The Primary Rate Interface is a network connection to the ISDN.
This type of connection is often also called a PRI or S2Minterface. A
Primary Rate Interface offers 30 user channels (B channels), each
with 64 kbits/s, in Europe and 23 in the USA, one control channel (D
channel) with 64 kbits/s and one synchronisation channel with 64
kbits/s in Europe and 8 64 kbits/s in the USA. See also Basic Rate
Interface.
Proposal When an IPSec connection is being established, the initiator of the
connection makes proposals with relation to the authentication and
encryption methods to be used.
Protocol Protocols regulate the flow of a data communication on different
levels of the OSI model. Protocols control addressing, coding, au-
thentication, formatting, etc. Examples: Ethernet, IP, TCP, HTTP
Proxy A proxy is a network component. The proxy is an agent. It routes a
query from the source with its own IP address to the destination.
Pulse dialling Pulse dialling is a signalling method for automated telephone rout-
ing. Key inputs are represented by a defined number of dc pulses.
See also Multifrequency code dialling method (MF).
PVID The Port VLAN Identifier (PVID) is the standard VLAN ID for the port
concerned. A packet that reaches this port without a VLAN tag is as-
bintec elmeg GmbH
Glossary
elmeg hybird 120 / hybird 130 709