Digital phone lines do not work in a power cut and if mobile signals are poor as well, people are left cut off from the outside world
Many people are anxious about the impact of switching landline telephone services to a fully digital network. The existing Public Switched Telephone Network (PSTN) will be withdrawn by 2025 and all phone calls carried over the internet.
This process is entirely industry-led since decisions on migrating customers are made by operating companies like BT and Virgin Media. They argue that the aging PSTN is becoming harder and more expensive to maintain, whereas digital services offer improved call quality.
This is all well and good but, unlike the existing landlines, an internet-based network requires a modem connection and a mains electricity supply. This means digital phone lines will not work in a power cut and if mobile signals are poor as well, people will be cut off from the outside world, a serious matter for those who are housebound or vulnerable.
The two recent severe winter storms caused widespread power cuts, some lasting for more than a week. People on digital networks found they could not keep in touch with friends and family or call the emergency services. Back-up battery packs do not last long enough – usually just one hour – and alarm systems are being affected as well, requiring yet more expense to make them digitally compatible.
The law requires providers to ensure uninterrupted access to emergency services at all times, including during a power cut. Ministers have said they are working with Ofcom to “ensure that consumers and sectors are protected and prepared” for the switch. They need to work a bit harder in that case.
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