You may have received calls scare-mongering you about how your phone systems will no longer be in use from 2025. Here’s our way of cutting through the noise and telling you what’s really going to happen.

What is ISDN?

You may have heard that BT have confirmed to switch off heritage phone lines. But what really are they? ISDN stands for Integrated Services Digital Network – if that doesn’t mean much to you – it’s the copper wires in the ground that traditional telephone systems use to connect calls.

Why is BT switching it off?

There’s many reasons why BT are switching off traditional copper lines from 2025. The main reason is that the infrastructure simply does not have the capacity to meet the demand anymore. There are many restrictions with ISDN, including a restricted number of calls being able to be made and received at the same time, plus you have to have a separate line to access the internet.

Quite simply, there is better technology available now.

Why does it matter to you?

If you use a phone system that runs on an ISDN line, the line will be switched off in 2025. So you need to start looking for an alternative.

What’s the alternative?

The alternative is SIP trunking, this uses the internet to stream media and make phone calls. Effectively, SIP uses the internet to make calls rather than a physical wire in the ground. It uses your circuit that connects your phone to the internet to make calls. It really is as simple as that.

The best part is, most newer phone systems that run on ISDN lines can be switched over to SIP trunking either straight away, or you may need to buy a card to allow the switch. Of course, in order to reap the best benefits included with SIP trunking, you may need a new handset.

The other alternative is to adopt and install a Hosted Telephone System, this replaces a traditional PBX telephone system that might be installed locally at your premises. You simply purchase physical handsets, PC/MAC soft phone licenses and/or mobile soft phone licenses that connect via your internet connection to a fully managed telephone system in the cloud. There is no more, a requirement for expensive maintenance contracts and extortionate upfront purchase and implementation costs & you get to keep your existing ISDN numbers!