News & Updates


25th April 2018

What does BT's announcement to cease ISDN & PSTN actually mean to Businesses?

BT having announced that from 2020 you will no longer be able to purchase integrated services digital network (ISDN) and public switched telephone network (PSTN) circuits and plans for 2025 as the switch off date.

Questions are naturally being asked. Will BT really flick the switch in 2025? What needs to be in place before that can happen, and what are the options for those currently on ISDN/PSTN circuits?

Firstly, what are PSTN and ISDN circuits?

PSTN is the analogue copper phone line most people have at home, While it may have evolved over the years, PSTN is a very, very old technology, operating similarly to the first late 19th century public phones. However, PSTN also acts as a 'carrier' for broadband services.  As of yet BT have not suggested any replacement for this, so presumably BT’s planned obsolescence of PSTN applies to voice only (for now).

ISDN, however, was only introduced in the late 80's. It allows both voice and data services to be delivered over digital lines simultaneously. When it launched, ISDN was well-suited to businesses, as it could support early video-conferencing systems at the same time as an analogue phone line, it could also offer the fastest internet access available at an incredible 128 kbps...!!!

So, what options are available?

It's probably best that we first have a chat, discuss your current situation and plans for your business, and then agree some actions to ensure your commiunications technology can support those plans

Please e-mail with your contact details and we will then get back to you to arrange a convenient meeting date.

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