Panasonic 1200N manual DS3 Plcp, Dse, Dsu, Dte, Dtl

Glossary D

DS-2

Digital Signal, Level 2: The North American Digital Hierarchy signaling standard for transmission of 6.312 Mbps that is used by T2 carrier which supports 96 calls.

DS-3

Digital Signal, Level 3: The North American Digital Hierarchy signaling standard for transmission at 44.736 Mbps that is used by T3 carrier. DS-3 supports 28 DS- 1s plus overhead.

DS3 PLCP

Physical Layer Convergence Protocol: An alternate method used by older T carrier equipment to locate ATM cell boundaries. This method has recently been moved to an informative appendix of the ATM DS3 specification and has been replaced by the HEC method.

DSE

Distributed Single-Layer Embedded (Test Method): An abstract test method in which the upper tester is located within the system under test and there is a point of control and observation at the upper service boundary of the Implementation Under Test (IUT) for testing a protocol layer, or sublayer, which is part of a multi- protocol IUT.

DSS2 Setup

Digital Subscriber Signaling #2: ATM Broadband signaling.

DSU

Data Service Unit: Equipment used to attach users' computing equipment to a public network. Converts RS-232-C or other terminal interface to DSX-1 interface.Also called Digital Service Unit.

DTE

Data Terminal Equipment: A generic definition of external networking interface equipment such as a modem.

DTL

Designated Transit List: A list of nodes and optional link IDs that completely specify a path across a single PNNI peer group.

DTL Originator

The first switching system within the entire PNNI routing domain to build the initial DTL stack for a given connection.

Centillion 1200N ATM Switch User Manual	B-23
NTP 297-8103-903