Want NR to phone you anywhere to warn you of an alarm?

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Do you want NR to phone you to warn you of an alarm for example?

For those who want to be called on their cell phone by their home automation, in case of alarm for example, here is what I set up. I use for this the software from Linphone.

You can see a short visual and auditory demo here

It is relatively simple.

  1. First of all, you have to buy 2 SIP virtual phone numbers. Your ISP can rent them to you at about 1,30€ per month.

  2. Install a SIP client on your smartphone and register your first number. Make sure you are online.

  3. Install the Linphone software on your home automation, for me, it is a Pi under Linux.

Follow the steps below: :point_down:

Install Linphone

sudo apt install linphone

Linphone configuration

linphonec

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Starting the SIP daemon

linphonecsh init -c ~/.linphonerc

Look if the default port is well occupy by linphonc daemon

sudo lsof -i -P -n | grep LISTEN
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And now make a call with a wav file registered before like:

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And now, in order, the commands to make to call from your Pi:

sound initialization:

linphonecsh generic "soundcard use files"

Start a call to your personal phone by exemple :

linphonecsh generic "call 004122nnnnnn"

When answering, play the wav file wanted

linphonecsh generic "play /home/pi/Documents/Sound/msg1.wav"

And terminate the call after a delay

linphonecsh generic "terminate"

It remains to use a flow NR to make phone calls in case of alarm or other needs.
Here below an example to adapt for your personal use.
Think of changing the SIP phone number (or fixed number) by your own

Et voilà ! :smiley:

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1 Like
2

Jean-Luc, nice possibility but tell me what advantage this non-cost free alternative would give in comparison with cost free alternatives? Like me, I'm using Telegram, it has all I can imagine. When there is an alarm in my home automation, NR calls my iPhone via Telegram and can attach both images and video to the text message. And then you can respond via Telegram since it supports two way communication. There are several other comparable free services available I know other people are using, even email to phone works for some

3

Correct. I also use Telegram and email in parallel, that said, if you want to call a landline or smartphone without the Telegram app, it's useful.
The SIP phone is also very useful to call from anywhere to anywhere. I use it between different countries to call people who do not have these applications. A company for example.
The call is free.
You can also call me on this landline number for free for the caller, no matter where I am.

3 Likes
4

can we use DTMF and somehow pass it back to node-red?

5

What do you mean by DTMF?
And what do you want to do with it in NR ?

6

Hi, nice job!!
I'am interested too to DTMF.
For example could be useful call someone, play a msg about alarm (as u did) but also ask to called to press, for instance, number 5, to accept alarm's call. So by passing back a DTMF input in NR u can think about doing something else. So, is possibile manage DTMF codes passed back in such a way?
Regards

1 Like
7

This is a really good idea! :+1:
I haven't dug deeper into Linphone since my last topic so I don't know how to answer. I'm using it as is. Sorry.
I've looked a bit at what the net says about it, it seems you can use the log but I haven't found a factual explanation of how to do it either.
I would also be interested if you could find a way to retrieve the normalized frequencies to know the response of the user via his keyboard.
This would make it a real alarm center that could be configured.
Of course it would need some redundancy in it.

In the meantime, here is what I could glean from it.
For my part I lack time to dive more into the research. Good luck and I hope you will find and share with us the solution.