61200.130L1-1 FSU User Manual 123
Glossary
packet
A message containing both control information and data. The control
information is used for routing the packet through a network to its final
destination. Contrast with frame relay frame.
packet-switching network
A telecommunications network based on packet-switching technology, wherein a
transmission channel is occupied only for the duration of the transmission of the
packet. Contrast with frame relay network.
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.
permanent virtual circuit (PVC)
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 interface
form which the PVC is initiated. Terminating refers to the access interface at
which the PVC stops. Many data network customers require a PVC between two
points. Data terminating equipment with a need form continuous communion
use PVCs. See also data link connection identifier (DLCI).
pingAn internet protocol standard that provides loopback on demand for any device
in an IP network. One device "pings" another by sending a loopback request to
the device's IP address.
point-to-point
Type of communications link that connects a single device to another single
device, such as a remote terminal to a host computer.
RDL
Remote digital loopback.