About Us

Transition Advisory Service is a UK-based consultancy specialising in helping businesses prepare for the nationwide PSTN switch-off. We provide independent advice, clear guidance and cost-effective upgrade solutions tailored to your organisation.

Our mission is to ensure every UK business transitions smoothly with minimal disruption.

Why Transition Advisory Service?

  • Independent and provider-neutral

  • Specialists in PSTN switch-off compliance

  • UK-wide support

  • Fast, friendly and clear communication

  • Solutions for businesses of all sizes

  • Transparent pricing and straightforward advice

Frequently Asked Questions

If your specific query is not addressed here, please contact us for a direct conversation.

Your phones, alarms, lift lines and other services may stop functioning.

Not always — but every business must move away from analogue lines.

ADSL and FTTC rely on PSTN. You may need fibre or SOGEA.

Yes, we can coordinate with your existing supplier or recommend alternatives.

Book Your Free Consultation

Get expert advice on how the PSTN switch-off will affect your organisation and your best upgrade options.