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Openreach consults on shift of 16 MEEELLION phone lines to VoIP by 2025

Terry Barnes

You only need 100Kbps for voice and that's for full encapsulation using G.703 with a SIP overhead. With more efficient codecs you can drop that to 10Kbps or lower.

The number of locations with a telephone service installed but no mains power must be vanishingly small.

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