By: trioadmin On: January 15, 2019 In: Uncategorized Comments: 0

Whats happening to ISDN phone lines ? The ISDN switch off is due to take place in 2025, and BT will stop accepting amendments and new orders in 2020. The BT ISDN switch off could affect many businesses in the near future, especially those unaware of BT phasing out ISDN and...

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