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Openreach, which manages the national telephone network, announced plans to close the PSTN by the end of 2025. That date is now extended to 31 January 2027.
What will change?
The existing copper network cabling is reaching the end of its service life and is being replaced with a new all IP-digital network using fibre. The move to the new digital network will affect all communication providers using the Openreach network, for example, BT, Virgin, Talk Talk, and others, and will deliver improved digital services for customers.
Each communications provider will have their own plan to notify affected customers. Openreach withdrew wholesale line rental services that used the Public Switched Telephone Network (PSTN) on 5 September 2023. All new connections now utilise the fibre network.
What does this mean for security and safety systems?
The IP-digital network operates differently from the current PSTN network. As a result, the alarm transmission systems (ATS) used for your fire, security, and other building management systems may no longer work. This might also include personal safety alarms where transmitted over the analogue network. Without a functioning connection between your alarm systems and third-party alarm receiving centres, your premises could be vulnerable.
Another point worth noting is the loss of the existing 50-volt supply currently available across the analogue network. The new digital fibre network will not provide a voltage over the line to your premises. In the event of a power failure, this means your network service will be lost, including anything linked to it, like fire and security ATS. So, unless you have a suitable battery backup supply, your premises could be left without alarm signalling for the duration of any power cut.
Adding to the challenge is the phase-out of 2G and 3G mobile telephone networks. Many network providers have already turned off 3G services as 2G will be switched off by 2033. ATS will therefore need to be both IP and 4G enabled in the future.
What to do next?
If you have not already heard from your alarm installation and maintenance company about the rollout of the new IP-digital network, you should contact them now. If it affects your ATS, make sure you take steps ahead of the switchover in your area, upgrading your system if required. You can then be confident that signalling to your fire, security, and building management systems will continue to protect your premises for the future.
Additional information on the digital upgrade can be found on the following websites:
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