In 2025, BT will be switching off the PSTN and ISDN networks, moving all businesses from the old analogue public switched telephone network (PSTN) to a fully digital network. This is a full removal of traditional copper-based services from within telephone exchanges.

This will not only affect all PSTN & ISDN based technologies but also copper-based Broadband solutions such as ADSL and FTTC. This means that legacy products will be withdrawn from service and ceased. How will this affect your business? Any business that currently has a BT Analogue or ISDN line will be effected, as these services will cease in 2025.

Initial Exchange Withdrawal Dates have been confirmed by BT Openreach from as early as 2024 for a number of areas.

There will then be a rolling withdrawal of exchanges and ceasing of services across all areas through 2025. Analogue and ISDN lines are generally used for the following business services:

• Phone systems

• Internet services

• Alarm lines

• PDQ machines

• Fax machines

What do you need to do?

Make sure you have a clear understanding of the options available to ensure you have the right services and systems for your business requirements moving forward.

Alliance Communications are working with businesses to advise on the options available and how to best manage the migration of services away from the PSTN and ISDN networks to Digital IP based services.

They want to make sure businesses not only understand the options available, but also have a clear plan to migrate services in plenty of time before the switch off starts. And are supported through the process to ensure seamless continuity of services for your business.

If you would like more information or to explore the options available for your business, contact our BT Network Switch Off team on 01173 700900.