Elevate Your Connectivity with 4th Platform

Business Connectivity & PSTN Switch-Off Support

The UK is moving to an all-IP (Internet Protocol) future. Whether you’re replacing PSTN (Public Switched Telephone Network) /ISDN (Integrated Services Digital Network lines), upgrading ADSL/FTTC to fibre, or rolling out cloud telephony, 4th Platform plans and delivers a smooth, disruption-free transition.

The Switch-Off at a Glance

– Final switch-off (target): January 2027.

– Stop-sell since 5 September 2023. New PSTN/ISDN orders and many changes are blocked.

– The path forward is all-IP. Migrate to VoIP (Voice over Internet Protocol) with reliable fibre connectivity.

– We’ll do the heavy lifting. Discovery, audit, migration plan, and user training.

Solutions We Deliver

– Connectivity: SoGEA (Single Order Generic Ethernet Access), FTTP (Fibre to the Premises), Leased Lines, SD-WAN, 4G/5G backup

– Cloud Telephony: PhoneLine+, Gamma Horizon, Microsoft Teams Phone.

– Migration Services: Readiness audit, site surveys, porting, pilot, phased rollout, legacy device testing (alarms/EPOS/telecare)

– Continuity & Security: Power resilience options, battery backups, emergency calling guidance, router/firewall QoS (Quality of Service)

Your PSTN Switch-Off Playbook

Explore the key milestones, options, and checklists in our interactive Flipbook perfect for sharing with non-technical stakeholders.

Timeline to All-IP

2023

National stop-sell on PSTN (Public Switched Telephone Network) / ISDN (Integrated Services Digital Network).
2024

ADSL (Asymmetric Digital Subscriber Line) stop-sell; fibre first.
2025–2026

Migration window: audit → pilot → phased rollout.
Jan 2027

PSTN & ISDN switched off (target).