Blog | Continuant

Your Map for Navigating the PSTN Switch-off

Written by David Shelby | April 23, 2025

The Public Switched Telephone Network has been the backbone of communication for decades. However, its reliance on copper lines and analog devices pushes it ever closer to obsolescence. All over the world, businesses are looking to make the switch from the PSTN to the cloud once and for all. 

Some businesses may find this easier said than done. Healthcare organizations, for example, often rely on many different analog devices. They may need help from an experienced service provider to navigate this change. 

This is Continuant’s guide to the PSTN switch-off. 

Why is the Switch-off happening? 

Let’s quickly review why the PSTN switch-off is happening. 

The biggest reason is the infrastructure the PSTN runs on. To call it aging is an understatement. Copper lines are too expensive to maintain, and the companies and institutions that maintain them are desperate to get rid of them.  

One of the main ways they do this is by ballooning phone bills. Think about it from their perspective. A high bill will either get them enough funds to justify maintaining the copper lines, or compel their customers to cancel, allowing them to decommission the copper sooner.

PSTN users, therefore, are chiefly motivated by maintenance costs. At the same time, as technology advances, significantly more attractive options become available to businesses of all kinds.  

VoIP and unified communications (UC) have been around for a long time now and have only gotten better. No business wants to stay bound to landlines if they could just as easily use a solution like Microsoft Teams or Cisco Webex. 

Once the PSTN is gone for good, the cloud is the next stop. 

The Switch-off by Region 

As the PSTN switch-off carries on, different parts of the world will follow different timelines. Local organizations will simply have to follow their respective region’s guidelines, but bigger businesses with global networks will have more difficulties. These organizations will need to stay aware of this regional variance. 

The United Kingdom 

Great Britain has a set date. Telecom provider BT Openreach has announced that the PSTN will be completely switched off by January 31, 2027. As of September 2023, British communication companies are no longer selling PSTN services, encouraging their customers to transition to digital alternatives as soon as possible. 

The United States 

America, on the other hand, has no federally mandated date set. Instead, it's going for a more subtle approach, changing regulations and letting the market apply pressures. In March of this year, the FCC reduced the required notice period for carriers to discontinue traditional phone lines from 180 days to 90. 

American companies may not have their government breathing down their neck, but with a plan to have the PSTN phased out completely by the end of 2025, it’s still better to transition sooner than later. 

Europe 

Many European countries, such as Germany, the Netherlands, and Estonia, have already turned their PSTN off and replaced them with VoIP technology. Other countries like Denmark plan to have this finished by 2030, carrying out similar plans to decommission traditional phone systems. 

Japan 

Japan has been phasing out the PSTN since 2010. The Nippon Telegraph and Telephone Corporation (NTT) has since then rolled out fiber optics and digital solutions to replace its services, with the plan to switch it off for good in 2028. 

Preparing for the Transition 

Regardless of region, these are the steps an organization can take to be prepared for a full PSTN switch-off. 

  • Conduct a Comprehensive Audit: Identify all systems and devices currently using PSTN lines.  
  • Develop a Transition Plan: Create a roadmap for migrating to digital solutions. Potentially consult an expert like Continuant for help during this phase. 
  • Engage Stakeholders: Ensure that all departments are informed and involved in the transition process.  
  • Test New Systems: Before full implementation, test your new products to make sure your systems are fully integrated, and the updated environment can do everything it needs to. 
  • Provide Training: Develop a user adoption plan that includes training sessions for all users.

Navigation Assistance from Continuant 

For almost 30 years, Continuant has helped organizations in every industry across the world optimize their communications to save boatloads of money.  

Back in the day, we did this through industry-leading third-party maintenance for phone systems. Now we have new and improved solutions to help our customers keep the same level of efficiency and cost-savings with a sleeker, more modern communication environment. 

Continuant Connect is a platform that makes migrating from PSTN-connected legacy systems to modern cloud-based applications like Cisco Webex and Microsoft Teams easier than ever. Once the migration is complete, it serves as a sort of command center for your communications, giving you a single pane of glass to see and control every device, platform, and channel. 

For organizations with contact center needs, we’ve got the Continuant Connect Contact Center (C4). C4 is an omni-channel customer experience (CX) platform not unlike the contact centers you’d see from industry giants like Genesys and Five9. Powered equally by advanced AI and human intuition, it enhances interactions with customers while also making life easier for you and your agents. 

One of our customers, Intrust Bank, migrated over 1,300 users to Microsoft Teams using Continuant Connect. With this, it was able to decommission its legacy Cisco devices, cancel the licenses, and save no small amount of money in the process. When the PSTN is gone for good, Intrust will be secured in the cloud. 

We’re ready and willing to do the same for you. Connect with us today and to set up a free discovery call to begin your journey.