Organized as city surveillance?

How, in practice, arranged the connection of city surveillance cameras.
Locally, on site, home, office, businesses understand: the Internet, wifi, static IP or SIM card and p2p there is no problem.
And as part of the city, at large distances? For example, 50-100 km length of the city.
How, say, 50-70 cameras scattered throughout the city, access a single server video?
April 4th 20 at 13:13
3 answers
April 4th 20 at 13:15
Solution
In a small urban projects (100-200 cameras) chase through the Internet and local providers. Soft - generally the premium version of any ISS Securos or ITV Intellect.
Major projects are based fundamentally on a different principle. For example, "Safe city Moscow" right now, 175000 cameras. The list of equipment quality and functionality which are satisfied and supported API to communicate with ECHT, made the regulations in the acceptance of video (bit rate, frame rate, coordinates and azimuth of the camera). Built ECHT (Single data center) - hranica 16 Pb.
The provider (RTK, MegaFon, AKADO) participate in tenders for "supply of video". Their subcontractors mounted camera providers through its network of transmit streams in ECHT. There are 2 types of integration, 1 - camera give RTSP, storing in ECHT, 2 type - storage on the DVR at the site, ECHD if necessary, can pick up broadcast RTSP and throw on the DVR requests export files.
A custom part of the system consists of a vpn client to ECHT and personal account.
In a small urban projects (100-200 cameras) chase through the Internet and local providers
here more. Along the highway within the city stands the pillar(suspended), and hung the camera. Need ISP cable to pull or SIM card will go on p2p to be picked up to it? - Dylan_Beahan commented on April 4th 20 at 13:18
@Dylan_BeahanIn Moscow doing a wifi bridge to residential houses in the main, in the attic, respectively, the connection to the network provider. Coated optics to the pole is possible, but hemmoroid.
P2P seriously considered in large projects is impossible, if using mobile network, you need to drive traffic - take microt type sxt lte, with a vpn tunnel. - Geo.Kuvalis commented on April 4th 20 at 13:21
April 4th 20 at 13:17
How, say, 50-70 cameras scattered throughout the city, access a single server video?
In exactly the same way that thousands of users scattered across the country have access to this site. The length of thousands of kilometers.
Via the Internet.
Amazing, huh?
April 4th 20 at 13:19
How, say, 50-70 cameras scattered throughout the city, access a single server video?


If very briefly: nothing unusual - routine at "make a video in the enterprise."
Lines+for video processing with a bunch of their whistles+servers.

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