Panasonic 15000 - Manual (Page 44)

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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
DPRS
See dynamic packet routing system (DPRS) (page 45) .
DRAM
Dynamic random access memory.
drop precedence (DP)
Drop precedence refers to the importance of an IP packet. A drop precedence
value is assigned to a packet to control its loss sensitivity relative to other
packets when they are placed on the same queue. Generally, a drop
precedence value of low indicates the packet is less likely to be discarded
when the queue is congested. This traffic has a higher probability of being
forwarded. Similarly, a drop precedence value of high indicates the packet is
more likely to be discarded when the queue is congested. This traffic has a
lower probability of being forwarded. The actual loss sensitivity of packets
depends on the discarding mechanism at the queue.
DS0
The 64 kbit/s line standard format for North America as defined by the ITU-T.
DS1
The 1.544 Mbit/s interface defined in ITU-T G.703. Consists of a framed
pattern of twenty-four 64 kbit/s time slots.
DS1c
A digital signal level having a transmission rate of 3.152 Mbit/s carrying
48 DS0s plus overhead bits.
DS3
The 44.736 Mbit/s line standard format in North America as defined by the
ITU-T. This is the format used to carry information over the T3 trunk.
DSCP
See differentiated services code point (page 42) .
DSU
See data service unit (DSU) (page 40) .
DTE
See data terminal equipment (DTE) (page 40) .
DTL
See designated transit list (DTL) (page 41) .