Author Topic: Upgrade Apartment Intercom (with Ethernet?) and Mesh Wifi - Any suggestions?  (Read 343 times)

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Offline Zucca

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I would like to upgrade the intercom of nine apartment buildings, and take the opportunity to setup a new mesh wifi for everybody.
This building has and will have only one internet connection shared all nine apartments, it's a vacation home so only good wifi will be fine.
Regarding the intercom, every apartment should be able to talk to the main entry door "station" (whre the nine door bells buttoms are) at the ground level and open the door to let the guest in. No video wankery is needed but if video fits, nice to have.

Basically right now I have an analog system with single .75mm2 wires going everywhere. I would like to remove all those cables, so I have room for CAT6/7 Ethernet cables.
POE will be also nice for the intercom if it runs on ethernet jazz.

Something like this:

could works but I worried I do not have enough room for the "star" connection. is POE always a star configuration?

It's a old home in Italy so I need to have to minimize the cables in the walls as much as possible, a daisy chain configuration would be optimal so I can jump with from one apartment to the other quickly

I started today to look up stuff over the www, but may be there are here someone with some good tips for me.

Appreciate your help, thanks in advance.
« Last Edit: September 19, 2020, 04:40:10 pm by Zucca »
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Can't love what you don't know. Zucca
 

Online mansaxel

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Ethernet today is a star. Deal with it.

There are SIP-based "Door phones" on the market, with things like remote unlock et c.

PoE is not only desirable, I think you have to.

Make sure people can get in and out if there's a power outage. UPS on everything. Saves on support, too.

If you need a central unit, Asterisk runs nicely on as little as a Raspberry Pi. Not that you necessarily should have just one of those, but you can get a full PABX like that.  A possible addition is that you can let your tenants do call forwarding to cellular if desired (don't forget to collect CDRen for this so you can bill them since call forwarding from a PABX like so not only requires a SIP account with a provider, it also means outgoing calls. Which cost.) 

Combining this with WiFi access is indeed possible. You need one Access Point per apartment, anyway, and those are PoE as well.

Expect to pay a little more than you think for the central switch. You need a minimum of 24 ports (one AP, one door phone terminal per apartment is 18, and then sundries like door phones, cameras, PABX et c. )

People who install for speeds lower than Gigabit Ethernet should be whipped.

Online TheMG

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These days most apartment buildings no longer have a complex intercom system. They use an "enterphone" type device, which is connected to a regular telephone line (this could be a VoIP line too, but still needs its own number). Each tenant's phone number is then programmed into the unit (this can be either a landline or cellphone, whatever phone number the tenant wants to use).

Such a system eliminates the phone/intercom units in each individual apartment suite, huge savings on equipment and installation cost, simple to maintain, etc. It's also more convenient for the tenants because they are not limited to using a hardwired phone/intercom, they can buzz someone in from their cellphone, or even buzz themselves in if they locked themselves out of the building.

The only downside is that the landlord needs to maintain a database of each tenant's phone numbers in the enterphone system, which can be extra work if there is frequently people moving in and out.
 

Offline Zucca

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Well this should be the center of Ethernet star, where the switch goes:



No luck for me. The PVC pipes in the walls have a 12-14 mm diameter so only one eth cable can fit in. the problem is one wall pipes serve 3-4 apartments, depends on the branch.
Thanks for all the suggestions but I do not need a telephone system. I need just to buzz the apartment from the main door and the apartment should able to open the main door.
Looking for a wireless solution right now.
Can't know what you don't love. St. Augustine
Can't love what you don't know. Zucca
 

Online TheMG

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Thanks for all the suggestions but I do not need a telephone system. I need just to buzz the apartment from the main door and the apartment should able to open the main door.

I think you might be misunderstanding what I was suggesting. You do not need a full blown telephone system for the "enterphone" type intercom.

All you need is the device that installs at the main door, and a plain old telephone line to connect it to, that's it. No other infrastructure required.

Here's one such device: https://mircom.com/product-listing/voice-entry/integrated-telephone-entry-systems/hands-free-electronic-apartment-directory/tx3-200-8c-c-hands-free-voice-entry-panel/

No hardware is required in the individual apartments, and no cabling. All you do is program each tenant's phone number into the device. When someone at the door enters an apartment number, the device calls the phone number that is programmed in for that apartment, and makes a call. The tenant answers, and can press a number on their phone to unlock the door.

The phone numbers would be your tenant's personal phone numbers. I'm assuming most if not all of the tenants have their own phone number in the form of either a landline or a cellular phone, right?
 

Offline David Hess

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The first step should be not using Mesh Wifi.  If you cannot run wired Ethernet, likely with PoE, to each access point, then running a separate distribution channel on a different band is much better.

 

Online mansaxel

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The first step should be not using Mesh Wifi.  If you cannot run wired Ethernet, likely with PoE, to each access point, then running a separate distribution channel on a different band is much better then giving up and having a bottle of Amarone with a serving of cheese and cold cuts does more for good Internet than any optimism surrounding mesh or other wireless backbones.

There, fixed it for you.  :-DD :-DD :-DD :-DD

And, I'm more or less serious.

Offline mikerj

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No luck for me. The PVC pipes in the walls have a 12-14 mm diameter so only one eth cable can fit in. the problem is one wall pipes serve 3-4 apartments, depends on the branch.
Thanks for all the suggestions but I do not need a telephone system. I need just to buzz the apartment from the main door and the apartment should able to open the main door.
Looking for a wireless solution right now.

One ethernet cable from your central switch to a small remote POE switch that serves 3-4 apartments.
 


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