Is SMS notifications via GSM-modem still an active

Third party integrations
1

Home Assistant info:

  • Core 2024.10.2
  • Frontend 20241002.3

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I get the following error:

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Thanks!

2

It seems to be deprecated. Unfortunately, I bought the SIM800 modem specifically for this.

Home Assistant shows me this after the current update

Screenshot_20250613_035626_Home Assistant
Screenshot_20250613_035626_Home Assistant1080Ɨ941 131 KB

Is there an alternative? I would like to have the local modem, since it does not rely on an active internet connection.

3

Iā€™m very interested too.
I use this solution as the primary event notification channel (flood detection, etc.). Since I have the Home Assistant server connected to the UPS, this solution is the most reliable.
Iā€™m using Huawei E3372.

4

This is the approach I took. It does require you to use an install method where you have control at the OS level. I just use cellular when I notice that my cable is down. This was one of the main reasons I use a supervised install.

5

Your solution, although brilliant, has one flaw. It constantly relies on a stable internet connection. For example, when you are going on holidays to the mountains, such a connection is difficult to find.
ā€œSMS notifications via GSM-modemā€ allows you to receive an alert in a place where there is practically no internet, but also to issue a ā€œcommandā€ to Home Assistant (run an automation or so).
This was the main reason why I chose HA instead of other commercial solutions based solely on an Internet connection.

6

I guess I donā€™t understand. My method uses cellular as a backup to connect HA with the cloud. Once in the cloud Iā€™ve used various methods to get the message delivered to me, SMS being one. I assumed that my SMS messages would be delivered by my cellular network in the same manner yours would be. Maybe this isnā€™t the case. For me, when Iā€™m out of the area I dual route all my urgent notifications to a family member, so someone can physically respond if need be. So, my system also includes alternative end users as part of the solution.

7

Current solution did not require me to engage additional end users. I could do everything using SMS, bypassing any additional services (including Internet SMS gateways), which for various reasons may be temporarily unavailable. Even in places where is a problem with mobile internet, the mobile network works well enough that you can easily make a call, not to mention receiving/sending SMS.
This is what makes it the most universal and reliable solution.

8

Same problem for me, my Home Assistant is also dedicated to security with SMS notifications via GSM modem.

Here in Belgium, weā€™re not talking too much about the end of 2G yet, but itā€™s actually quite practical because with a simple SIM800C USB for ā‚¬5-6 and a Base 0 subscription, you can get emergency SMS for ā‚¬0.10 without a fixed line.

The SIM800L for ā‚¬2.50 is ESPhome compatible.

But shouldnā€™t we invest in a 4G LTE module for the future?

Is SMS easily compatible with LTE? I have my doubts. Thereā€™s the A7670 for ā‚¬15, but I donā€™t see any easy integration.

Since SMS notifications via GSM modem are based on Gammu, we could easily imagine a Gammu add-on with Home Assistant that communicates with it this way. But will they do it?

9

I am in the same situation. At the moment I have only found this project. Hopefully someone will implement a solution to this problem.

10

If I understand correctly, work is underway on integration on new terms.

11

Hey, I just ran into the same issue when the SMS notifications via GSM modem integration was removed.
As an alternative, Iā€™ve built a Home Assistant add-on: SMS-Gammu-Gateway

Itā€™s based on Gammu (Iā€™ve tested it with SIM800L) and works as a proper add-on in HAOS.
You can send/receive SMS either through REST API or MQTT, so itā€™s easy to integrate back into your automations.

12

Hi. @pavelve: Your add-on installs additional packages listed in files requirements.txt? Or it is just the list of required additional packages? I just donā€™t know how it works :frowning: Iā€™m asking, because python-gammu will be removed from HAOS, and because of this the old SMS Notification will be removed. Your addon will install gammu back?

13

Hi. Great question! Yes, my add-on installs all packages from requirements.txt during the Docker build process.

How it works:

1. Docker Build Process:

  • The add-on builds its own isolated Docker container
  • During build, it runs: pip install -r requirements.txt
  • This installs python-gammu and all dependencies inside the add-on container

2. Complete Independence:

  • The add-on is completely independent from HAOS system packages
  • It doesnā€™t rely on HAOS having python-gammu installed
  • Everything runs in its own isolated environment

3. Regarding python-gammu removal from HAOS:

  • My add-on will continue working even after python-gammu is removed from HAOS
  • It installs its own copy of python-gammu during build
  • No dependency on HAOS system packages

Current requirements.txt includes:

  • python-gammu==3.2.4
  • Flask==2.3.3
  • Flask-RESTful==0.3.10
  • Flask-HTTPAuth==4.8.0
  • paho-mqtt==1.6.1

So yes - the add-on will install gammu back (in its own container) and will be the perfect replacement for the deprecated SMS Notification integration!

This is exactly why I created this add-on - to provide a modern, maintained alternative when the built-in integration gets removed.

15

@pavelve: Thanks for the answer. Iā€™ll test it. First I should uninstall deprecated SMS add-on? Or removing of its configuration is enough?

Are you planning to add the add-on to HACS?

16

You just need to make sure that the integration is not talking to the hardware at the same timeā€”otherwise the add-on wonā€™t be able to communicate with it.

And about HACS: add-ons are not distributed via HACS. HACS is meant for integrations, Lovelace cards, themes, etc. Add-ons are installed through the Home Assistant add-on store, not HACS.

17

How its possible to delete all sms?
Thank you for the great add-on!

18

Hi Michael,
please check the Documentation tab and the REST API section ā€“ there youā€™ll find an explanation on how to delete SMS.

19

any suggestion for a 4g modem thatā€™s working with your integration? (3g is being shutdown in my country)

20

I have not tested any 4G modem.

The add-on relies on Gammu, and Gammu works with any modem that provides a standard AT command interface for SMS. So as long as the modem exposes that interface, it should work regardless of whether itā€™s a 2G, 3G, or 4G device.

The only limitation is that some newer devices act only as ā€œHiLink/router modeā€ without exposing AT commands, and those wouldnā€™t be supported.

21

Hi everybody,

When I try to add the repository of sms-gammu, I get an error message :slight_smile: Cmd(ā€˜gitā€™) failed due to: exit code(128) cmdline: git clone -v --recursive --depth=1 --shallow-submodules ā€“ home-assistant-addons/sms-gammu-gateway at main Ā· PavelVe/home-assistant-addons Ā· GitHub /data/addons/git/60b93bdb stderr: 'Cloning into ā€˜/data/addons/git/60b93bdbā€™ā€¦ fatal: repository ā€˜home-assistant-addons/sms-gammu-gateway at main Ā· PavelVe/home-assistant-addons Ā· GitHubā€™ not found ā€™

Do you know why ?