CCTV transmission system

[LongNg]

Hello everyone, I’m about to deploy around 254 PoE cameras for 3 buildings.

• Each building will have its cameras connected to a PoE switch located in that building.
• I will divide the cameras evenly into 2 IP ranges.
• From these switches, the signal will be sent to a 24-port Gigabit switch in the server room, so the entire system can be managed and monitored through the manufacturer’s camera management software.
• On the server software, permissions will be assigned to 19 users at their respective workstations, each allowed to view specific cameras (possibly up to 20 cameras per user).
• The switch in the server room will also connect to the 19 workstations and 4 NVRs.

My question is: with this setup, will the signal be stable and will the bandwidth be sufficient?

Also, instead of running cables from the server room switch to the 19 workstations, can I connect the workstations directly to the switches in each building (since the workstations are spread across the buildings) to reduce the need for fiber cabling to the server? The 2 photos below are the basic parameters of the camera and switch.

Thank you.

 

[alastairstevenson]

will the bandwidth be sufficient?

Add up the bitrates for each of the cameras connected to each PoE switch, to discover if the traffic level can be handled by the switch backplane and uplinks.
The bitrate required for each camera will depend on how the camera video encoding is configured, and what codec is selected.

 

[LongNg]

Add up the bitrates for each of the cameras connected to each PoE switch, to discover if the traffic level can be handled by the switch backplane and uplinks.
The bitrate required for each camera will depend on how the camera video encoding is configured, and what codec is selected.

Bitrate is 5–6 Mbps, switch 4 × Gigabit SFP fiber. The picture below is my system connection diagram, can you give me more comments on it? Thanks

 

[alastairstevenson]

Bitrate is 5–6 Mbps,

That might be a bit low for good quality 5MP video, depending on camera video settings and codec.

switch 4 × Gigabit SFP fiber.

The diagram shows a single 1Gbps fibre uplink from each building. Is that correct?
That may get quite congested with 80-100 cameras aggregate plus multiple workstations traffic.

 

[LongNg]

That might be a bit low for good quality 5MP video, depending on camera video settings and codec.


The diagram shows a single 1Gbps fibre uplink from each building. Is that correct?
That may get quite congested with 80-100 cameras aggregate plus multiple workstations traffic.

Yes, do you have any optimal solution?

 

[LongNg]

That might be a bit low for good quality 5MP video, depending on camera video settings and codec.

Yes, partly because of the large number of cameras.