[VoiceOps] SIP door intercom-phones

Wed Jul 13 11:29:50 EDT 2016

Many of the SIP door phone products handle this issue.

The Algo Communications device that I have used has an external intercom device that's connected to a separate interface box inside the building. Only a twisted pair run between them with power and signaling. There's no need for Ethernet to to the exterior wall.

Michael

--------- Original Message --------- Subject: Re: [VoiceOps] SIP door intercom-phones
From: "Zilk, David" <David.Zilk at cdk.com>
Date: 7/13/16 10:20 am
To: "voiceops at voiceops.org" <voiceops at voiceops.org>

  I would be hesitant to extend an Ethernet connection for a SIP phone outside of the secured building perimeter without mitigating the potential security risks to the network.  Much better to use one of any number of existing products which use an analog phone line; and connect it back to an ATA located within the perimeter.

 David

 From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Oren Yehezkely
 Sent: Monday, July 11, 2016 15:41
 To: mgraves at mstvp.com
 Cc: voiceops at voiceops.org
 Subject: Re: [VoiceOps] SIP door intercom-phones

 Carlos,
 I have been using 2N for several years now. It is not cheap at all, but once you get it installed it works just great. It is a full IP phone, not just a speaker or an intercom. Mine also has video which you can watch on a video phone, such as GrandStream.
 I am not sure if it has WiFi, but I am using it with POE so it has a wire anyways.
 Some other great advantage is that it has an RFID sensor so the door can be opened with multiple unique cards or keyfobs.
 I think that you can also get it today with Bluetooth or NFC, which will make it even more convenient.
 I would recommend it whole heatedly, and I am not affiliated with 2N.
 Good luck!
  On Jul 11, 2016 5:51 PM, <mgraves at mstvp.com> wrote:
  FWIW, I had the  DoorBellFon for a while. At the time I had it connected to the analog jack of a Gigaset SIP/DECT cordless phone. 

It was dreadful. Lousy audio quality. Tended to oscillate. It had a difficult time getting loud enough to be heard over the ambience at our front gate.

I wrote it off as a false economy and replaced it with an  Algo Solutions 8028.

Michael

 --------- Original Message ---------
  Subject: Re: [VoiceOps] SIP door intercom-phones
 From: "Jay Taylor" <jay.taylor at hitechmn.com>
 Date: 7/11/16 4:39 pm
 To: "'Carlos Alvarez'" <caalvarez at gmail.com>, voiceops at voiceops.org
  Years ago my wife's parents (the Outlaws) wanted something simple like this and I found this:

 http://www.doorbellfon.com/homephone.htm

 The “DoorBell Fon” was what we used for the project.

 Requirements:

 Analog phone line, can be used by any phone in the house, two way audio, use existing doorbell wire.

 What this device does is insert itself between the demarc and the phones in the house.  If you are on the phone it acts like a call waiting service to let you know someone is at the door.  The reverse is also true,  If you are talking to someone at the door and a phone call comes in, you will be notified that the phone is ringing.

 I believe you can set the ring so that you can tell if it's a phone call or the door (double ring for door).  There is also the ability to activate a relay for a door opener if necessary.

 You could very easily hook this to an ATA and connect it to a voip system.

 When I installed this some 10 years ago, it cost about $85.00 wholesale.  It's still running and they still love it.  You can still get parts so if something fails, just order the new part and you are good to go.  I'm seeing current retail for this item in the $150 range or less.

 http://www.multiconnects.com/doorbell-fon-dp28it This kit is only $130.

 For the money and easy install factor, this was an absolute no brainer as the right thing to use.

 The electronics look very much like something from “Viking Electronics” if you've used their products.

 Jay
 (Not affiliated with these companies in any way, just like their product.)

 From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Carlos Alvarez
 Sent: Monday, July 11, 2016 2:18 PM
 To:  voiceops at voiceops.org
 Subject: [VoiceOps] SIP door intercom-phones

  I need to deploy a few outdoor-rated speakerphones for a customer, to serve in place of the old intercom systems.  The ONLY thing they need to do is dial a single pre-set number on our system when a button is pressed.  So really, just looking for an outdoor speaker phone with a "dial from memory" button.

Does anyone have one they really like?  802.11af would be a nice bonus, but not absolutely required.

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