Reminder – The Great BT ISDN Switch Off: BT Phasing Out ISDN By 2025

The Great BT ISDN Switch Off: BT Phasing Out ISDN By 2025 BT intends to switch off the PSTN and ISDN networks for good, starting with a cease in supply in 2020 and moving to a full migration by 2025. The BT ISDN switch off could affect many businesses in the near future, especially those […]