Domoticz

I have a electrical port to my house, which I have connected to domoticz using a relay switch.

I want to be able to open the port when someone calls a phonenumber, for example using a prepaid sim card in a certain device which I can connect to domoticz.

Anyone ever did this? What is the easiest way?

Unfortunately I don't have a Fritzbox but a Ziggo modem. so this is not an option.

Hi, I was planning to do something similar with a tasker and a old dedicated android phone.
Then it is just to make a simple profile in tasker that will trigger the Json url of domoticz to change some switch, or script or whatever.
Should be relatively easy, just a bit learning of tasker if you never used it

Ok, that is an option indeed, I do need an old phone then. Any other options?