ISDN Switch off, Microsoft Teams Phone, PSTN Switch off, Unified communications
The UK’s PSTN and ISDN networks are being permanently switched off by January 2027, signalling the end of traditional copper phone lines. Businesses that delay migration risk service disruption and rising costs. This blog explains what the switch-off means, why moving to Cloud Voice now is essential, and how Microsoft Teams Phone, delivered by CPS, can help you modernise and future-proof your communications.
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