PBX decommissioning
Retiring on-premise systems across multiple sites onto a single cloud platform.
Communications
Enterprise voice, consolidated onto the platform people already use
Microsoft Teams Direct Routing, SIP trunking, cloud telephony and unified communications for organisations rationalising fragmented voice estates across multiple countries.
The challenge
Voice is the last estate nobody has consolidated
Legacy PBXs, regional carriers, inherited numbering and contact routing that only two people understand. Meanwhile the organisation has standardised on Teams for everything except calls.
- Multiple voice platforms and carriers across countries, each with separate support and contracts.
- Number ranges tied to legacy carriers, blocking platform change.
- Call quality issues that are blamed on the network but never definitively diagnosed.
- Regulatory and emergency-calling obligations that differ by jurisdiction.
Our solution
One voice architecture across every country you operate in
We design the target voice architecture, handle porting and regulatory requirements per jurisdiction, and deliver Direct Routing or SIP into your platform with the media path and resilience designed properly. Call quality is treated as a network engineering problem, because it is one.
Core capabilities
What we deliver
Teams Direct Routing
Carrier-grade PSTN into Microsoft Teams with resilient session border control.
SIP trunking
Multi-country SIP with capacity planning, failover and fraud protection.
Cloud telephony
Platform selection and design for organisations moving off on-premise PBX.
Unified communications
Voice, meetings, contact routing and devices designed as a single experience.
Number porting
Managed porting projects, including complex multi-jurisdiction number estates.
Enterprise voice
Call flows, resilience, emergency services compliance and quality assurance.
Business outcomes
What changes for the organisation
One
Voice platform and support model across all operating countries.
Retained
Number ranges ported without service interruption to the business.
Measured
Call quality monitored end to end with attributable root cause.
Compliant
Emergency calling and regulatory obligations met per jurisdiction.
How it works
Delivery approach
Voice migrations are judged on the day of cutover. The work happens before it.
- 01
Discovery
Number inventory, call flows, contracts, regulatory obligations and dependencies.
- 02
Design
Platform, SBC topology, media routing, resilience and quality targets.
- 03
Port & migrate
Scheduled porting waves, parallel running and site-by-site cutover.
- 04
Assure
Quality monitoring, adoption support and ongoing optimisation.
Typical engagements
Where organisations engage us
Teams voice enablement
Adding enterprise-grade PSTN to an existing Microsoft 365 estate.
Multi-country consolidation
Replacing per-country voice carriers with one governed architecture.
Next step
Start with a conversation, not a quote
Book a discovery workshop with a solutions consultant. We will review your current estate, target architecture and commercial constraints before recommending anything.