Business calls that work
wherever your team does
Wanzo provides business VoIP, Teams calling and managed communications, backed by the network and IT support your employees rely on each day.
- →Cloud phone systems
- →Microsoft Teams calling
- →Business SIP trunks
- →IVR call routing
- →Contact centre tools
One system for every conversation
Business phone systems have moved beyond desk handsets. We provide cloud calling that gives employees a consistent number and calling experience across office and remote work. Microsoft Teams calling can bring external calls into the app your people already use, while SIP trunks connect compatible phone systems to modern internet telephony.
We manage setup, call routing and ongoing support through one monthly relationship. IVR directs callers to the right place, and contact centre tools give customer-facing teams better control of queues and activity. Because Wanzo also provides IT and internet services, there’s one team responsible for the systems, network and connectivity behind every call.
What's included
Cloud phone systems
Move business calls into a managed cloud platform that supports desk handsets and remote work. We handle configuration, number management and ongoing service as your requirements change.
- •Business number management
- •Desk and mobile calling
- •Ongoing platform support
Microsoft Teams calling
Use Microsoft Teams for external business calls alongside internal meetings and messages. We connect calling to the wider communications setup and manage the underlying service.
- •External calls in Teams
- •Existing number options
- •Managed user configuration
Business SIP trunks
Connect an existing phone system to internet calling without replacing every component at once. SIP trunks support a controlled move away from older fixed-line services.
- •Compatible system connection
- •Inbound and outbound calling
- •Planned service migration
IVR call routing
Direct incoming calls with menus and opening-hour rules that reflect how your departments work. We configure routing around real teams and keep it maintained after launch.
- •Menu-based call routing
- •Department and team options
- •Opening-hour routing rules
Contact centre tools
Give customer-facing teams a clearer view of call queues and activity. Contact centre tools help managers organise demand, support employees and understand how calls are being handled.
- •Visible call queues
- •Agent availability tools
- •Call activity reporting
Managed communications support
Your phone service depends on the network beneath it. Wanzo can manage connectivity, network infrastructure and IT alongside VoIP, reducing hand-offs when performance or access needs attention.
- •24/7 service monitoring
- •Four-hour response commitment
- •Network and IT support
Why businesses choose Wanzo
One accountable provider
We manage the phone service and can also support the IT and connectivity behind it. You won’t have to coordinate several suppliers when a call problem crosses system boundaries.
Built around your work
We configure users, routing and calling around the way your teams already operate. The service can develop under a monthly plan as headcount or working patterns change.
UK-wide managed service
Our London team delivers and supports business communications across the UK. Wanzo works with Microsoft, Cisco and major infrastructure partners including Openreach to support the service.
Questions people ask
What is business VoIP and how does it work?
Business VoIP carries voice calls over an internet connection instead of a traditional fixed phone line. Employees can make and receive calls through compatible desk handsets, computers or mobile devices, depending on the chosen setup. The service can include number management, call routing, voicemail, IVR and contact centre functions. Wanzo manages the communications platform and can also provide the business connectivity and network infrastructure it relies on.
How much does business VoIP cost in the UK?
Business VoIP pricing depends on user numbers, calling requirements, hardware and the features your team needs. A simple cloud phone setup won’t cost the same as a contact centre with advanced routing and reporting. Wanzo scopes the service around your operation and provides it through a monthly relationship. Send us your requirements and we’ll set out what is included before you decide.
Can Microsoft Teams be used as a business phone system?
Yes. Microsoft Teams can handle external business calls when the right calling service, numbers and configuration are in place. Employees can make and receive calls within Teams alongside their existing meetings and internal messages. Wanzo can configure Teams calling, connect it to your communications setup and manage the ongoing service. We’ll also check the supporting Microsoft 365, network and connectivity requirements.
Can I keep my existing business phone numbers?
Existing business numbers can often be retained when moving to VoIP, subject to provider, number type and porting checks. We review the current service before confirming what can move and how the migration should be handled. Don’t cancel the old service before the number transfer is agreed, as that can put the number at risk. Wanzo will set out the migration steps and dependencies in advance.
Is VoIP reliable enough for business?
Yes, when the platform, internet connection and network are properly managed. Call quality depends on available bandwidth, local network performance and how voice traffic is prioritised. Wanzo can manage these underlying services alongside VoIP, with 24/7 monitoring and a four-hour response commitment. Connectivity services come with a 99.9% uptime SLA, helping reduce the gaps that appear when phone and network suppliers work separately.
Plan your VoIP service
Tell us how your teams handle calls today, and we’ll recommend a managed setup that fits the work.
No commitment. No sales pressure. Just honest advice.