With the looming switch-off of ISDN and PSTN circuits, businesses in the UK will have no choice but to update their phone systems to the cloud before December 2025. This is when the old networks will be turned off. These older networks are being replaced with newer technology, such as VoIP as well as the discontinuation of ISDN and PSTN; broadband lines with a dial tone such as ADSL and FTTC are also being discontinued and replaced with new products such as SOGEA and FTTP (Fiber to the Premise).