ISDN Switch Off, are you prepared?

isdn - ISDN Switch Off - As you may or may not know, in 2015 BT announced its intention to switch off its PSTN and ISDN networks by 2025. Read to learn more!

As you may or may not know, in 2015 BT announced its intention to switch off its PSTN and ISDN networks by 2025. They are to be replaced by….