PBX Maintenance, Support, and Migration
Trusted Support to Extend the Life of Your PBX Systems
Get world-class support for your PBX phone systems—at a fraction of the cost of traditional providers. At Continuant, we understand the nuances of legacy infrastructure and offer tailored support and migration services to match your goals and timelines.


What Makes Our PBX Services Different
Many original equipment manufacturers (OEMs) phase out support in an effort to push costly upgrades. Rather than facing forced obsolescence, Continuant helps you maximise your existing investments with a phased, hybrid approach to PBX maintenance, support, and eventual migration—on your terms, not theirs.
Global, Multi-Vendor PBX Support
Whether you’re running one platform or a complex mix, we provide seamless, centralised support across a broad range of systems.

Avaya PBX Support
From MiVoice to MiCloud, your Mitel PBX estate is still mission-critical. Our team ensures stability and efficiency, keeping your systems performing with minimal disruption.

Cisco PBX Support
Legacy Cisco voice environments still have a vital role to play. Our team enables you to operate those systems effectively until you’re ready to transition to a full cloud collaboration suite.

Nortel PBX Support
Keep your Nortel systems running reliably with 24/7 incident support—without being pushed to upgrade. Continuant helps extend the lifespan of Nortel infrastructure well beyond OEM timelines.

What Our PBX Services Deliver
When you partner with Continuant, you eliminate the common headaches of traditional PBX support:
- Costly OEM maintenance contracts
- Inflexible upgrade cycles
- Managing multiple vendors across fragmented systems
Continuant’s Maintenance Advantage Plan (MAP)
Maximise the Value of Your PBX Investment
Our MAP programme was designed for large organisations that want to extend the lifespan of their PBX systems beyond OEM support windows. Whether you’re managing ageing hardware or building a hybrid roadmap to the cloud, MAP gives you stability, cost savings, and control.
The Continuant Advantage
Why IT Leaders Choose Continuant
Industry-Leading SLAs
In the event of an outage, we restore systems with unmatched speed and reliability.
No Pressure to Upgrade
We work to your strategy—not the vendor’s sales cycle.
24/7/365 Support
Access real engineers around the clock. Always on, always available.
Tier 3 Engineer Access
Direct escalation to experienced, high-level technical experts.
No Compulsory Software Support Fees
Continue using functional systems without forced software spend.
Guaranteed Parts Availability
Even for legacy platforms, we ensure the right components are in stock.
Dedicated Support Team
One point of contact. One team you can rely on.
40% Average Cost Savings
Most of our customers reduce their maintenance spend by 40% or more.
Continuant Connect
Future-Proof Your Communications—On Your Terms
Continuant Connect offers a flexible path from legacy voice systems to cloud communications.
Choose Your Timeline
Decommission PBX hardware in phases. Our hybrid solutions ensure continuity throughout.
Choose Your Carrier
Stay with your current provider, select a new one, or appoint us. We’ll ensure compliance while reducing costs.

Choose Your UCaaS Tools
Microsoft Teams, Zoom, Webex, and others—we support the platforms you need, with no lock-in.
Need Better PBX Support—or Planning a Migration?
Our guided, tailored approach gives you peace of mind while extending the life of your systems. Whether you need urgent support or long-term planning, we’re here to help.