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12 C1640M-B (3/06)
ENDURA B BLOCK
The Endura B Block generally determines the bandwidth requirements for the network. The B Block is functionally responsible for decoding and
displaying the video streams, as well as providing the control and configuration of all Endura components.
The B Block functionality is summarized as follows:
• Based on permissions, can view and control any camera on entire system
• Each B Block is assigned to a specific VLAN
• The B Block can be replicated any number of times (limited only by network capacity)
• Contains all viewing devices
– NET5301R decoders
– VCD5000 video console displays
– WS5050 Endura Workstations (WS)
Figure 4 illustrates the B Block.
Figure 4. B Block: Decoding and Viewing Video
ENDURA TRAFFIC SUMMARY DETAILS
This section provides information that allows you to calculate the bandwidth requirements for the Endura network. The Endura traffic details are
summarized as follows:
• Maximum video stream from an NET5301T encoder is 5.0 Mbps plus overhead:
– Up to 3.0 Mbps total for both multicast live streams
• Up to 2 Mbps for stream 1 (4CIF)
• Up to 1 Mbps for stream 2 (CIF)
– Up to 2.0 Mbps for unicast recording stream
For information on calculating the bandwidth, refer to Calculating Bandwidth and Storage Requirements on page 13.
• 5.5 Mbps total with audio and data.
• Network utilization should always be figured for the worst-case scenario. For information on calculating the worse-case bandwidth, refer to
Calculating Bandwidth and Storage Requirements on page 13.
• Playback is not a stream, but a “burst” of data.
• Each NVR5100 has a 100 Mbps cap on playback data:
– The NVR5100 will use as much of 100 Mbps bandwidth as necessary to transmit the requested clip data.
– The NVR5100 will divide that 100 Mbps up among multiple playback requests if necessary.
• NVR5100 playback is unicast.
• Constant and frequent requests for playback video must be included when determining worse-case bandwidth.
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NOTES:
• Live video traffic is only steamed across the network when requested by a view station.
• Throughput needs to be calculated at various points on the network, depending on how many cameras are going to be viewed and at
what size.
LAYER 2 SWITCH
VCD
WS
DECODER
CORE SWITCH
VLAN 2