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11 Mar, 2026
Future-proof your funeral communications with a seamless ISDN-to-SIP migration.
Openreach is switching off ISDN across the UK. We ensure your business is migrated well ahead of the deadline with zero disruption.
Modern VoIP alternatives offer features ISDN never could — video calling, mobile integration, and flexible call routing.
Most businesses see significant monthly savings after migrating from ISDN to VoIP, often reducing telephony costs by 40% or more.
Cloudswitched provides modern ISDN replacement solutions for UK funeral services, migrates your business from legacy ISDN lines to modern SIP trunks and VoIP, ahead of the 2025 PSTN switch-off, with improved call quality and lower costs. We audit your existing ISDN usage, design a modern SIP-based replacement, and manage the entire migration so your funeral directors and arrangers experience no disruption to their communications.
A clear, structured process from consultation to ongoing support.
We audit every ISDN line, channel, and number in your business — including those used for alarms, lifts, fax machines, and card payment terminals — to ensure nothing is missed.
Based on your audit, we recommend the right combination of VoIP, SoGEA, and analogue adapters to replace every ISDN service with a modern equivalent.
We port your numbers, configure new systems, and test everything before decommissioning your old ISDN lines. Your team experiences zero downtime during the switch.
We port your existing telephone numbers and replicate your current call routing, so your funeral directors and arrangers and clients experience zero disruption when ISDN lines are replaced with SIP trunks.
SIP trunks typically cost 40-60% less than equivalent ISDN lines. For funeral services with multiple lines across funeral homes and offices, the savings are substantial and immediate.
Modern SIP trunks deliver HD voice quality that surpasses ISDN, ensuring your funeral directors and arrangers present professionally on every call with clients, suppliers, and funeral contacts.
Unlike ISDN, SIP trunks integrate with modern funeral platforms and support features like video calling, call recording, and CRM integration with IFAB, Funeral Zone, and case management platforms.
Hundreds of successful ISDN migrations for funeral services across the UK
Understanding of funeral telephony requirements and call patterns
Number porting with zero downtime and no lost calls during migration
Integration expertise with IFAB, Funeral Zone, and case management platforms for click-to-call and call logging
Free ISDN audit identifying all lines, usage patterns, and migration priorities
UK-based support team available throughout the migration and beyond

The UK PSTN switch-off means all ISDN lines will stop working. Openreach has already stopped selling new ISDN lines and is actively migrating exchanges. Funeral Services should begin their migration now to avoid service disruption and secure the best SIP pricing.
No. Cloudswitched ports all your existing telephone numbers to SIP trunks, so your funeral directors and arrangers, clients, and all published contact details remain unchanged throughout the migration.
Most funeral services save 40-60% on line rental and call charges by migrating from ISDN to SIP trunks. A typical funeral homes and offices with 8 ISDN channels saves approximately £200 per month, adding up to over £2,400 annually.
We audit all ISDN-dependent equipment including alarm panels, fax machines, and EPOS terminals. Each device is migrated to a suitable IP-based alternative, ensuring no funeral system loses functionality during the transition.
A typical ISDN migration for funeral services takes 2 to 6 weeks from audit to completion. Cloudswitched manages the entire process, including number porting, SIP configuration, and handset setup, with a dedicated project manager for your funeral migration.
Limited time offer - valid until 31/05/2026
Get ahead of the switch-off. Share your details and we will conduct a free audit of your ISDN estate.
Submit your details and one of our friendly team members will be in touch shortly
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