This is tone dialling and very sought after model and will work on all networks. Including voip with a UK to RJ11 converter with ring capacitor.
This was one of the last models of Trimphones and uses the modern tone dialling which means it can work on any system including dialling your bank etc. As you can see this is in great condition and has been fitted with the essential electronic microphone to bring the speech up to modern standards. I can make a dial label with your information at no extra cost. This one is not perfect as it has a slight fade. It has been stipped cleaned and polished and actually had many more hours spent on it that average.