VoIP Migration Service for UK Businesses
The 2027 PSTN switch-off is no longer a distant deadline—it is an immediate operational priority for every UK organization. As Openreach decommissions the legacy copper network, your business requires a structured business VoIP migration service that eliminates downtime, preserves your existing numbers, and modernizes your communication infrastructure. stride communications specializes in de-risking this transition, moving your legacy ISDN or analogue lines to high-performance next-generation business phone systems without interrupting your daily operations
25 Years’ UK Experience
in Telecoms & Network Infrastructure
1000+ UK Businesses Connected
and Migrated Successfully
99.999% Uptime Guarantee
for All Cloud Voice Services
UK-Based Personal Support
from Certified Technical Engineers
Why a Managed VoIP Migration is Non-Negotiable in 2026
The transition to all-IP telephony is a mandatory compliance measure. By the end of 2025, many UK exchanges will have reached “Stop-Sell” status, meaning no new analogue services can be purchased or amended. A DIY migration often leads to “one-way audio” issues, dropped calls during the UK number porting process, and security vulnerabilities.
At stride communications, we view migration as a strategic upgrade. Our modern telephony architecture allows you to consolidate fragmented suppliers into a single, unified bill while leveraging advanced features like AI call analytics and mobile integration.
Proprietary Insight: The stride communications Migration Risk Index
Most UK businesses are unaware of the “silent” dependencies on their copper lines. Our proprietary Migration Risk Index audits your infrastructure to identify hidden vulnerabilities. For example, our data shows that 65% of UK manufacturing firms have at least one unmapped analogue line used for a critical safety system—such as a boiler alarm or lift phone—that will fail if not correctly migrated.
We utilize the Stride Governance Baseline to assess your current management friction points, such as time spent on billing admin or the frequency of engineer call-outs, creating a roadmap to total portal autonomy.
| Category | High Risk Indicators | Low Risk (Stride Target) |
|---|---|---|
| Connectivity | Standard ADSL/FTTC with no QoS | Full Fibre (FTTP) or Leased Line with Voice VLAN Optimal |
| Hardware | Analogue handsets / Legacy PBX | IP-Enabled Handsets or Softphone-First Strategy |
| Dependencies | Integrated Alarms/Lifts on PSTN | All non-voice devices moved to GSM or IP-ATA |
Choosing Your Path: Cloud PBX vs. SIP Trunking
Depending on your current hardware investment, there are two primary pathways for your UK VoIP migration.
| Feature | Hosted Voice Platform | Digital Voice Trunks (Hybrid) |
|---|---|---|
| Best For | SMEs & Hybrid Teams | Enterprises with existing PBX |
| Hardware | No on-site server required | Retain your current Avaya/Mitel |
| Scalability | Instant (Software-based) | High (Virtual channels) |
| Maintenance | Managed by Stride Communications | Managed by your IT team |
| Link | Cloud Phone Systems → | SIP Trunking for PBX → |
For organizations seeking a total transformation, our hosted voice platform removes all physical line constraints. If you wish to sweat your existing assets, our digital voice trunks connect your on-premise hardware to the modern PSTN network.
The Stride 5-Step Zero-Disruption Migration Protocol
Our managed migration process is engineered to ensure your business remains reachable at every stage.
1. The Comprehensive Estate Audit
We document every DDI, fax line, and “special service” line (alarms, lift phones, PDQ machines). This prevents the common “Blackout” scenario where critical safety systems are accidentally disconnected during the switch.
2. Network Readiness & QoS Assessment
A successful migration depends on your business internet connectivity. We audit your local area network (LAN) to ensure voice traffic prioritisation standards are met. This includes disabling SIP ALG on routers and ensuring your firewall is configured for secure UK VoIP traffic.
3. Managed Number Porting (The LOA Process)
We handle the complex administrative porting process directly with Openreach and your losing provider (BT, Virgin, Gamma). By managing the Letter of Authority (LOA) and technical validation, we ensure your “Gold” numbers move seamlessly to our network.
4. Provisioning & Implementation
Whether you require professional business phone systems or direct routing for Teams, our engineers handle the setup. We prioritize VoIP implementation tasks like Voice VLAN isolation to guarantee high-definition audio.
5. The "Green Light" Cutover
We perform a “Parallel Run” where both systems operate simultaneously. Once testing is 100% successful, we execute the final switch—typically out of hours—to guarantee zero downtime for your customers.
Who Should Use a Professional VoIP Migration Service?
Our managed service is designed for UK organisations that cannot afford communication downtime.
mall to Medium Enterprises (SMEs): Businesses currently using ISDN or PSTN who need to modernise before the 2027 switch-off.
Professional Services: Firms (Accountants, Solicitors, Architects) who require 100% call reliability and professional call handling features.
Multi-Site Organisations: Businesses looking to consolidate multiple local office systems into one unified communication platform.
Healthcare and Education: Clinics and schools that require robust emergency routing and high-capacity call handling.
Sector-Specific Migration Success Stories
Legal & Professional Services: Hybrid Continuity
A multi-site mid-tier UK law firm faced frequent connectivity drops on an aging PBX. stride communications migrated their 150 users to a unified communications hub.
Solution: Centralised hosted voice platform with encrypted call recording for MiFID II compliance.
Result: Customer wait times dropped by 70%, and the firm realized a 35% reduction in monthly costs.
Manufacturing & Engineering: Legacy Protection
A manufacturing SME in High Wycombe relied on legacy fax and alarm lines.
Solution: We implemented an intermediate bridge using SIP-enabled connectivity and replaced the fax with an e-fax service.
Result: The business avoided an operational shutdown during the PSTN switch-off and future-proofed their safety systems.
Healthcare & Education: High-Availability Reliability
For clinics and schools, a missed call is a critical failure.
Solution: Implementation of specialist healthcare phone systems with 99.999% service level agreement (SLA) backing.
Result: 100% call capture during peak hours via intelligent auto-attendants.
Comparison: DIY Migration vs. Stride Managed Migration
| Feature | DIY / "Box-Shifting" Provider | Stride Managed Migration The Seamless Way |
|---|---|---|
| Number Porting | You manage paperwork and disputes | Stride manages the full end-to-end port |
| Network Check | None (assume your Wi-Fi is fine) | Professional network & QoS audit |
| Hardware | Plug and play (good luck) | Pre-configured, tested, and labeled |
| Support | Call centre ticket queue | Dedicated UK project manager |
| Non-Voice Devices | Ignored (alarms will fail) | Identified and integrated or replaced |
Technical Proof: Security and Performance Standards
Our business VoIP migration service is built on carrier-grade infrastructure. We mandate SRTP and TLS encryption across all managed handsets and softphones, preventing eavesdropping. Every device we provide is fully compliant with the PSTI Act 2022, ensuring your hardware meets modern UK security mandates.
To ensure crystal-clear conversations, our network diagnostic tools monitor:
Latency: Kept under 150ms to prevent “talk-over.”
Jitter: Stabilised under 20ms to prevent audio stutter.
Packet Loss: Maintained at 0% via dedicated voice prioritisation.
Beyond Voice: The Complete Solution Architecture
A successful migration is the foundation for a total unified business communications ecosystem. Once your voice traffic is in the cloud, you can integrate additional services:
CRM Integration: Synchronize your calls with Salesforce or Microsoft Dynamics.
Managed Wi-Fi: Ensure your office has the wireless network infrastructure required for mobile softphones.
Business Mobiles: Extend your office extension to our mobile and SIM solutions.
AI Support: Deploy an AI receptionist or AI call analytics to gain deeper customer insights.
Strategic Decision Checklist for IT Directors
[ ] Have you audited all analogue dependencies (Alarms, Lifts, PDQs)?
[ ] Is your current internet connection sufficient for the concurrent call volume?
[ ] Do you have a “Letter of Authority” ready for your administrative porting process?
[ ] Has your firewall been audited for SIP ALG and port-forwarding compliance?
[ ] Are your physical VoIP desk phones PSTI Act 2022 compliant?
VoIP Migration Service FAQs
As the UK nears the final deadline for the PSTN and ISDN retirement, businesses often face technical and administrative hurdles. Below are the most common questions regarding the “Big Switch Off” and ensuring a compliant migration.
What exactly is a VoIP migration?
A VoIP migration is the process of moving your business communication from traditional physical phone lines (PSTN/ISDN) to an internet-based system. This involves moving your phone numbers, updating your hardware, and ensuring your internet connection can support high-quality voice traffic
Will we lose our phone numbers during the move?
No. Provided the migration is managed correctly, Stride Communications can port your existing numbers from your current provider to our digital platform. We handle the paperwork and coordination with the losing provider to ensure a seamless transfer.
How long does a typical migration take?
For most small businesses, the planning and audit phase takes 1–2 weeks, followed by a 10–14 day period for the number porting process. The actual “switch” usually happens in a matter of minutes, often scheduled outside of your peak business hours.
Do we need to buy all new handsets?
Not necessarily. While modern IP handsets offer the best experience, we can often use ATA (Analogue Telephone Adapters) to keep existing phones working, or move your team entirely to softphones on their laptops and mobiles, removing the need for desk hardware altogether.
What happens if our internet goes down?
Stride Communications builds resilience into every migration. Our systems include automatic failover to mobile apps or alternative numbers, ensuring you never miss a call even if your local office internet experiences a fault.
1000+ UK businesses trust Stride | 5/5 average rating | 98% first-contact resolution
What Our Clients Say About Our VoIP Migration Service
Take the First Step Toward a Future-Proof Business
Don’t leave your business connectivity to chance. The 2027 PSTN switch-off is approaching, and the best time to migrate is before the legacy network begins to degrade. Stride Communications is ready to help you plan, execute, and support your move to the cloud.
Book your free, no-obligation VoIP Migration Audit today.
Claim Your Free VoIP Trial, Quote & Expert Consultation
Discuss your requirements with our expert team during your free consultation. We’ll assess your connectivity, set up your free VoIP trial, and provide a detailed quote showing exactly how much you’ll save. Simply fill in your details below for your no-obligation trial and quotation, then click ‘Get My Quote’.
