Panasonic 15000 manual Din, Dlci, Dma, Dme

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List of terms

differentiated services code point

A 6-bit field in an IP packet header that is used for specifying differentiated service parameters for the IP packet.

Digital Private Network Signaling System No 1 (DPNSS 1)

A common-channel signaling protocol intended for use between PBXs in private networks through time slot 16 of a 2.048 Mbit/s digital transmission system. Similarly, it can be used through time slot 23 of a 1.544 Mbit/s digital transmission system.

DIN

Deutsche Industrialische Norm. A set of standards for electronic and industrial products that originated in Germany.

Dijkstra’s algorithm

An algorithm that is sometimes used to calculate routes in an ATM network, given a link and nodal state topology database.

direct memory access (DMA)

A method of transferring data to or from memory without having to use the CPU, thus improving the overall speed of the system.

discard eligibility (DE)

A bit in the frame relay header. A frame is marked with the DE bit to indicate that, in times of congestion, the frame is to be discarded before frames without the DE bit set. This bit is set either by the user or the network.

discard priority (DP)

Discard priority refers to the importance of a frame or cell. The Nortel Multiservice Switch system has 4 discard levels, where 0 is the most important (last to be discarded) and 3 is the least important (first to be discarded). Discard priority 0 is reserved for Multiservice Switch control traffic, leaving three discard priorities for user traffic.

DLCI

See data link connection identifier (DLCI) (page 38).

DLSw

See data link switching (DLSw) (page 39).

DMA

See direct memory access (DMA) (page 42).

DME

See data manipulation engine (DME) (page 39).

Nortel Multiservice Switch 7400/15000/20000

Terminology

NN10600-005 7.2S1 Standard

PCR7.2 and up March 2006

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