Media Links MD8000 Series, Руководство по эксплуатации

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MD8000 Rev. H MD8000 Series Transport System Summary 2.29
added to the original longer route so that when it becomes the shorter route it has enough
buffering to be automatically adjusted. The delta of delay in the initially short route when it
becomes longer needs to be added to the original longer routes base point.
Table 2-11 and Table 2-12 summarize the characteristics of the Delay Adjustment Buffers, in
quantity of packets and in time (milliseconds) respectively.
Table 2-11: Delay Adjustment Buffer Characteristics in No.of Packets
Dimensions (in No.of packets)
Board
Type
Signal
Type
Mode
Port
Rate
(Mbps)
Port
Rate
(Mbps)
Buffer
Size
Loading Base Point Under-
flow
Below
Over-
flow
Above
Min Default Max
VIF
HD
FEC=ON
1,485
1.709Gbps
65,536 32 128 64,000
12 64,512
FEC=OFF 1.613Gbps
SD/DVB
FEC=ON
270
310.8Mbps
65,536 32 128 64,000
FEC=OFF 293.2Mbps
MVIF SD/DVB
FEC=ON
270
310.8Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 293.2Mbps
MVIF DVB
FEC=ON
213
268.8Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 249.6Mbps
FEC=ON
200
252.4Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 234.3Mbps
FEC=ON
180
227.1Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 210.9Mbps
FEC=ON
160
201.9Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 187.5Mbps
FEC=ON
140
176.7Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 164.0Mbps
FEC=ON
120
151.4Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 140.6Mbps
FEC=ON
100
126.2Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 117.2Mbps
FEC=ON
90
113.6Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 105.5Mbps
FEC=ON
80
100.9Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 93.7Mbps
FEC=ON
70
88.3Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 82.0Mbps
FEC=ON
60
75.7Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 70.3Mbps
FEC=ON
50
63.1Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 58.6Mbps
FEC=ON
40
50.5Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 46.9Mbps
FEC=ON
30
37.9Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 35.2Mbps
FEC=ON
20
25.2Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 23.4Mbps
FEC=ON
10
12.6Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 11.7Mbps
FEC=ON
5
6.3Mbps
32,768 32 128 31,000 12 32,640
FEC=OFF 5.9Mbps