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 Post subject: Re: Surveillance system using ip cameras
PostPosted: Thu Nov 08, 2018 10:02 am 
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pastre wrote:
Is it to possible to use one cat6 cable and have branches for the other cables?

Please forgive me for the stupid question

It's not a stupid question and the answer is "kind of."

You cannot do it passively. I.e.: Simply split the copper N ways. But you can run a single "backbone" connection to a remote Ethernet switch, and branch out from there.

So, for example: I have my alarm system, an over-the-air TV network tuner and networked DVR all in the same spot in the corner of the basement. It's at the opposite corner as the computer room. I ran a single cable from our computer room to that location, put a 5-port switch there, and plugged them all in.

It's configuration-less, unless you buy a managed switch, then it's optionally configurable so you can examine the status of the switch's ports, etc.. (I like managed switches as they can aid network debugging--and security, if you know what you're about and want to go to the trouble.)

Obviously the placement of that remote network switch will have to be environmentally acceptable for its electronics and you might want to consider a small UPS.

You can also do the backhauling with WiFi. Say a pair of Ubiquiti Nanostation Loco M5's. One's connected to your network, the other to the remote Ethernet switch. But that starts to get iffy if you have a lot of cameras, you're using several 8MP cameras, or the WiFi connection isn't that great, as your bandwidth will be greatly limited over that 5GHz wireless backhaul.

I'm actually eventually going to do that 5GHz backhaul thing with our µBarn, about 100' from the back of the house. Then I'll put a WiFi AP up in the peak on the inside and an IP camera looking out at the yard. Maybe another pointing back at the house. None of this because I need to, but more for the giggles :)


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 Post subject: Re: Surveillance system using ip cameras
PostPosted: Fri Nov 09, 2018 3:39 am 
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Cortian2 wrote:
pastre wrote:
Is it to possible to use one cat6 cable and have branches for the other cables?

Please forgive me for the stupid question

It's not a stupid question and the answer is "kind of."

You cannot do it passively. I.e.: Simply split the copper N ways. But you can run a single "backbone" connection to a remote Ethernet switch, and branch out from there.

So, for example: I have my alarm system, an over-the-air TV network tuner and networked DVR all in the same spot in the corner of the basement. It's at the opposite corner as the computer room. I ran a single cable from our computer room to that location, put a 5-port switch there, and plugged them all in.

It's configuration-less, unless you buy a managed switch, then it's optionally configurable so you can examine the status of the switch's ports, etc.. (I like managed switches as they can aid network debugging--and security, if you know what you're about and want to go to the trouble.)

Obviously the placement of that remote network switch will have to be environmentally acceptable for its electronics and you might want to consider a small UPS.

You can also do the backhauling with WiFi. Say a pair of Ubiquiti Nanostation Loco M5's. One's connected to your network, the other to the remote Ethernet switch. But that starts to get iffy if you have a lot of cameras, you're using several 8MP cameras, or the WiFi connection isn't that great, as your bandwidth will be greatly limited over that 5GHz wireless backhaul.

I'm actually eventually going to do that 5GHz backhaul thing with our µBarn, about 100' from the back of the house. Then I'll put a WiFi AP up in the peak on the inside and an IP camera looking out at the yard. Maybe another pointing back at the house. None of this because I need to, but more for the giggles :)


Thanks for the solution. Normally I wound hire someone to do the job instead of me. But you can't find a lot of technicians around here. Also the 3-4 technicians you can find are very expensive and not well educated.


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 Post subject: Re: Surveillance system using ip cameras
PostPosted: Fri Nov 09, 2018 10:12 am 
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pastre wrote:
Thanks for the solution. Normally I wound hire someone to do the job instead of me. But you can't find a lot of technicians around here. Also the 3-4 technicians you can find are very expensive and not well educated.

You're welcome. Only fly in the ointment I see is you wrote:
Quote:
The distance between the cameras and the dvr will be about 110 meters/360 feet...

Technically speaking: The maximum distance between any two active devices for twisted-pair Ethernet is 100 meters (328 feet). Going ten meters (33 ft.) over is pushing your luck. I have gone over a little and gotten no more than length warnings from cable testers, but other times I've not been so lucky.

I don't think I've ever tried to go that far over, though.

There are products called PoE Ethernet Extenders to solve this problem. Or, if you have a structure with power between Point A and Point B you can just put a small Ethernet switch in there to act as a "repeater." Even if you have to take a slight detour to do it.


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 Post subject: Re: Surveillance system using ip cameras
PostPosted: Fri Nov 09, 2018 3:02 pm 
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Hi. You might be going down the wrong path.

If you have coax already run. Why don't you look at 5mp tvi or cvi cameras and recorder.

You can use your existing cables and add. Also you can have more than 1 camera on coax


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