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BT moving to an IP network by 2025

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BT moving all customers to an IP network by 2025


"A recent survey constructed by TalkTalk Business found that 25% of UK businesses are still unaware of the ISDN switch off."

BT has revealed plans to migrate all 3.2 million of its customers to an IP network and turn off its ISDN network. BT made the announcement stating that “by 2025, all their customers will be using IP Voice”.

This wasn’t a decision taken lightly by BT and was made after much discussion with the whole of the telecoms industry. It was decided unanimously that it was inevitable that ISDN and PSTN networks were going to come to the end of the life and therefore 2025 was decided as the cut-off. This date would also give providers and customers the relevant time needed to transition to IP Telephony solutions.

A recent survey constructed by TalkTalk Business found that 25% of UK businesses are still unaware of the ISDN switch off. But the survey also found that 96% of those that had already switched to hosted voice or SIP trunking have seen large money savings, and one in four confirmed that the switch had halved their telephony costs.

Guy Miller the Director of Next Generation Voice of TalkTalk Business, commented “IP Voice products like SIP Trunking and Hosted Voice are essential for businesses looking to not only reduce telephony costs, but also adopt more modern approaches to work, such as those offered by collaboration and unified communications tools.”

What is PSTN?

PSTN stands for Public Switched Telephone Network, it’s the world’s circuit-switched telephone networks that’s are operated by national regional, or local telephony operations, providing infrastructure and services for public telecommunications. – source.

The telephone service carried by PTSN is usually called the ‘plain old telephone service’, and refers to the copper wires that carry the analogue voice data.

What is ISDN?

ISDN stands for Integrated Services Digital Network, it is a set of communication standards for simultaneous digital transmissions of voice, video, data and other network services over PSTN. – source.

Put into more simple terms, this is how you can plug both your internet and your phone into the same port, as both voice and data travel down the same line.


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