Appendix D. Glossary

near end

The unit on-site.

network interface (NI)

The point of interconnection between the TSU IQ+ unit and the carrier's T1 net- work.

out-of-band

Signaling that is separated from the channel carrying information (voice, data, video, etc.). Typically the separation is accomplished by a filter. The signaling includes dialing and other supervisory signals.

packet

A message containing both control information and data. The control informa- tion is used for routing the packet through a network to its final destination. Contrast with frame relay frame.

packet-switching network

Atelecommunications 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 tim- ing options.

PRI

Primary rate ISDN.

PRM

performance report message. A message sent to the network interface (NI) once per second over the FDL which contains performance monitoring and status information. This is available in ESF only.

ping

An 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.

D-10

TSU IQ+ User Manual

61200275L1-1

Page 188
Image 188
ADTRAN TSU IQ+, 1204002L2 user manual Pri