https://iot-portal.com Development Blog

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...

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.

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...

Easily Add/Remove Users via Internet Live Entry Log via the Web Wireless Connection using 4G & 5G Network No Expensive Cabling Required Data & SIM Prepaid for 10 Years 4000 Users per Controller Control Days of Week and Time of Day for Each User NB-IoT Model operates Deep Indoors and Underground Can use Existing Readers and Low Cost Tags 5G brings wireless connectivity underground and indoors removing the need for expensive cabling on your door control systems. With minimal data usage we provide prepaid service for 10 years on all major networks globally.Multiple doors can be managed online via the...