Netopia Router PN Series - Manual (Page 284)

GL-14 Reference Guide
Parameter: A numerical code that controls an aspect of terminal
and/or network operation. Parameters control such aspects as
page size, data transmission speed, and timing options.
PC Card: A removable device, such as a modem or network
inter face card, approximately the size of a credit card. Designed to
fit into a PC Card slot. Formerly called a PCMCIA card. See
PC Card
slot.
PC Card slot: The slot designed to hold PC Cards. Formerly called a
PCMCIA slot. The Netopia ISDN Router has a PC Card port with two
PC Card slots.
PCMCIA: See PC Card.
PVC (Permanent Virtual Circuit): A frame relay logical link, whose
endpoints and class of service are defined by network management.
Analogous to an X.25 permanent virtual circuit, a PVC consists of
the originating frame relay network element address, originating
data link control identifier, terminating frame relay network element
address, and termination data link control identifier. Originating
refers to the access inter face from which the PVC is initiated.
Terminating refers to the access inter face at which the PVC stops.
Many data network customers require a PVC between two points.
Data terminating equipment with a need for continuous
communications use PVCs. See also
DLCI (Data Link Connection
Identifier.
port: A location for passing data in and out of a device, and, in
some cases, for attaching other devices or cables.
port number: A number that identifies a TCP/IP-based service.
Telnet, for example, is identified with TCP port 23.
POTS (Plain Old Telephone Service): A service that connects
analog devices such as telephones, facsimile machines, or
modems to the Netopia ISDN Router and communicate over the
ISDN line.
PPP (Point to Point Protocol): A protocol for framing IP packets
and transmitting them over a serial line.