The retirement of the UK analogue telephone network is now planned for 31 January 2027. The additional time is helpful, but it should be used to complete a controlled migration rather than postpone the work.
Openreach advises that analogue services and devices connected to them must move to digital alternatives. For a business, the challenge is rarely limited to the desk phones everyone can see.
Find every service that depends on a telephone line
Start with billing records, socket surveys and conversations with facilities suppliers. Legacy lines may still support:
- lift emergency phones and refuge systems;
- intruder alarms, fire panels and monitored CCTV;
- door-entry and intercom systems;
- payment terminals, franking machines and fax devices;
- building controls, telemetry and remote monitoring;
- backup lines that have not been tested for years.
Record the telephone number, physical location, service owner, supplier and business impact of losing each line. Do not cancel anything until the replacement has been installed and tested.
Digital voice depends on power and connectivity
A traditional analogue handset could often continue working during a local power cut. A digital service normally needs a router, network equipment and the device itself to remain powered. Critical services may therefore require an uninterruptible power supply, mobile failover or a replacement product designed for resilient operation.
Check whether your broadband connection has enough capacity and whether voice traffic receives appropriate priority. Businesses with a single internet circuit should also decide how calls and essential devices will operate during an outage.
Protect numbers and call flows
Decide which numbers must be retained and confirm the porting process before terminating the old contract. Document hunt groups, call queues, voicemail, out-of-hours routing and emergency arrangements so the new platform reproduces the required business behaviour.
Use the move as an opportunity to remove unused lines and replace inflexible hardware with a managed VoIP service. Modern systems can support remote working, mobile applications, reporting and easier continuity planning.
A sensible migration sequence
- Complete the line and device inventory.
- Confirm replacement options with every specialist supplier.
- Design power and connectivity resilience.
- Pilot the new service at a low-risk site or department.
- Port numbers and test inbound, outbound and emergency calls.
- Retire legacy lines only after sign-off.
MSP247 provides advanced telephone systems, SIP and VoIP services and resilient business connectivity. Contact us for a line audit and migration plan.