https://iot-portal.com Development Blog
5G GSM Alarm Dialler Quick Start Guide
Posted by Michael Beaver on
Just before he popped home Michael did a quick video showing how to set up a 5G GSM Alarm Dialler. These are excellent products and are very simple to set up and use. They have an extremely high level of reliability and will operate for a decade without any user intervention.
RTU5024 4G GSM Gate Opener VoLTE Investigation
Posted by Michael Beaver on
When 2G and 3G are gone you will need VoLTE to make calls and a working IMS to send and receive messages. 4G is just for data. There is no native voice channel on 4G. VoLTE is a software layer a bit like having a VoIP app or WhatsApp running off you data for calls. It is obviously much more deeper integrated into your phone's firmware however. In the video Michael demonstrates how the RTU5024 drops back to 3G when a call comes in. It immediately goes back to 4G after. This is because the modem cannot accept 4G voice...
Dublin Airport Ireland NB-IoT Availability
Posted by Michael Beaver on
Intercom Text-to-Speech System Development
Posted by Michael Beaver on
In the video Michael shows us how the TTS system was developed for the 4G GSM intercoms. This system tells installers what is wrong with the setup and how they should go about rectifying it.
4G GSM Intercom Dial-to-Open investigation on Vodafone Ireland
Posted by Michael Beaver on
We had a report of the dial-to-open system on a 4G GSM intercom not working periodically using a Vodafone Ireland SIM. Everything else about the unit was working perfectly so we had to investigate. TLDR; it was working fine... perhaps a wiring issue We set about writing some firmware that could log the relevant information and allow us to see what happens within the software from our office in Liverpool. The actual GSM intercom was in another country but that doesn't matter as we can see the inner workings from anywhere. In fact the server we use for it to connect...