Lucent Technologies Release 8.2 manual Udp, Unp, Vci

time slot Glossary

time slot

64 kbps of digital information structured as eight bits every 125 microseconds. In the switch, a time slot refers to either a DS0 on a T1 or E1 facility or a

64-kbps unit on the TDM bus or fiber connection between port networks.

trunk

A communication line linking two switches (public-network, PBX, or

MMCX-server).

trunk group

U

A collection of trunks that all terminate at the same public switch, PBX, or MMCX server.

UDP

1.User Datagram Protocol — Transport layer; Connectionless, unreliable, fast.

2.Uniform Dial Plan.

UNP

Uniform numbering plan

unrestricted data

Data that has to travel over an unrestricted facilities, because it can be corrupted by Zero Code Suppression (ZCS) line coding. Digital data is unrestricted data.

unrestricted facilities

V

PRI spans that use non-ZCS line coding, such as B8ZS or HDB3, end-to-end. See Zero Code Suppression (ZCS).

VCI

The ATM virtual channel identifier. ATM is a connection-oriented service that sets up a virtual circuit between the transmitter and the receiver. The two endpoints negotiate an agreed route through the network before sending any data. VCI and VPI together constitute the virtual circuit number that identifies this route.

virtual channel identifier

See VCI.

		Administration for Network Connectivity
488	CID: 77730	555-233-504 — Issue 1 — April 2000