The phase-out of ISDN and PSTN has started

The phase-out of ISDN and PSTN has started

In 2025, BT is switching off its traditional phone network: this means ISDN and PSTN lines will no longer work. As early as 2020, you will no longer be able to purchase any more ISDN or PSTN capacity from BT, so if your call volumes go up or you relocate, your customer experience will suffer.

 

Most technology running phone systems today is either ISDN or PSTN. ISDN is a network of digital lines carrying voice and data (the internet) into buildings. This powers your company’s PBX system, letting everyone access both the phone and the internet simultaneously. PSTN is the analogue phone lines that many of us have at home. In 2025, BT is switching off its traditional phone network: this means ISDN and PSTN lines will no longer work. As early as 2020, you will no longer be able to purchase any more ISDN or PSTN capacity from BT, so if your call volumes go up or you relocate, your customer experience will suffer. Much of the UK is unprepared for this: three in four businesses are still using ISDN or PBX phone systems. With phased decommissioning due to start next year, it’s an ideal moment to move your communications to the cloud.

 

Migrating to the cloud isn’t just about being prepared for 2025, it’s an opportunity to transform your business digitally, drive innovation and meet the ever-changing demands of today’s customers. Contact us to discuss how our high-touch approach and extensive range of communications providers can ready your organisation for the ISDN switch-off.