Voice over Internet Protocol

Summary

To ask the Secretary of State for Science, Innovation and Technology, what data her Department holds the percentage of landline telephone connections that have been migrated from the Public Switched Telephone Network to digital voice services.

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Timeline

1. 1 June 2026

   Written question

   To ask the Secretary of State for Science, Innovation and Technology, what data her Department holds the percentage of landline telephone connections that have been migrated from the Public Switched Telephone Network to digital voice services.

   Source: Commons

2. 4 June 2026

   Answer

   The analogue Public Switched Telephone Network (PSTN) is a privately-owned telecoms network and the decision to upgrade it to digital Voice over Internet Protocol (VoIP) was taken by the telecoms industry in 2017.Over 92% of PSTN landlines have already be...

   Source: Written answer

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• · Department for Science, Innovation and Technology · Answering body

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