Voip Telephone Provider
As a VoIP provider for businesses we design and manage cloud switchboards, SIP trunks and IP telephone lines: geographic numbering, CRM and Microsoft Teams integration, call security and human technical support with guaranteed SLAs. Cut your phone costs, with support covering the whole of Lombardy.
- ★ 4.7 · 38 Google reviews
- 25 years of experience
- ISO 9001 / ISO 27001

01 / Risposta rapida
What is VoIP for businesses, in short
VoIP (Voice over IP) lets you make calls over the Internet instead of a traditional line: lower costs, a scalable cloud switchboard and direct integration with CRM, helpdesk and collaboration tools such as Microsoft Teams.
- Migration from ISDN lines and traditional PBXs with no service downtime
- Geographic numbering and number portability handled by us
- PC and smartphone softphones for remote work
02 / Who we work with
The right IP telephony for every business
We work with both those starting from scratch and those migrating from ISDN or traditional PBX systems to modern, scalable IP platforms.
- Companies
- Technical firms
- Digital agencies
- Call centres
- Professionals
03 / Traditional or VoIP
Traditional phone line or VoIP: which to choose
Moving to IP isn't just about costs: it changes how the phone fits into everyday work.
Traditional line (ISDN/PBX)
- Extensions and lines tied to on-site physical hardware
- Adding a number requires an intervention on the line
- No native integration with CRM or cloud tools
Cloud VoIP switchboard
- Reduced phone costs and transparent rates
- New extension ready in minutes, even remotely
- Integration with Microsoft Teams, CRM and helpdesk
04 / The advantages
Why choose TN Solutions as your VoIP provider
- 40% potential savings on phone costs
- 0 licence costs with an open-source switchboard (FreeSWITCH/3CX)
- 24/7 monitoring of voice quality, latency and jitter
- 25+ years of experience as a System Integrator
How quickly we take charge of your request
Just like in our VirtualAssistance support contract model, the response time is selectable based on how critical your systems are: the shorter it is, the higher the priority.
| Response SLA | Best suited for |
|---|---|
| 3 hours | Critical servers and services that cannot afford downtime |
| 8 hours | Workstations and services with a significant operational impact |
| 12 hours | Relevant requests that can be handled within the working day |
| 24 hours | Routine requests and activities that can be scheduled |
It's the same selectable SLA model used in our IT support contracts: we define it together based on your systems, with no hidden costs.
Not sure which SLA level is right for you? We analyse your infrastructure for free and help you choose the SLA that best fits your company, with no obligation.
05 / Tools and technologies
VoIP platforms and integrations we manage
- FreeSWITCH
- 3CX
- SIP trunk
- Microsoft Teams
- Google Workspace
- PC and mobile softphone
06 / Partner tecnologici
07 / Approfondimento
Guide to VoIP providers for businesses
- 25+ Years supporting businesses
- 4.7/5 Average rating on Google
- 38 Verified reviews
- ISO 9001/27001 ISO certifications
Looking for a reliable VoIP provider for your business? TN Solutions designs and manages cloud VoIP switchboards, SIP trunks and IP telephone lines for companies of every size: geographic numbering, CRM and Microsoft Teams integration, call security and human technical support with guaranteed SLAs. Cut your phone costs and upgrade your switchboard with zero service interruption.

VoIP provider and business telephony solutions
Business communication is more effective and flexible with professional VoIP solutions. TN Solutions is a VoIP provider for businesses, with a full range of IP-based telephone services designed to guarantee savings, scalability and continuity. We offer tailored solutions, cloud switchboards, geographic numbering and CRM integration with your business applications.
We manage every stage: from supplying devices to configuring VoIP lines, ensuring dedicated technical support and guaranteed SLAs. The service integrates with our network assistance for businesses, because quality IP telephony always starts with a well-designed network.
Why choose TN Solutions for VoIP telephony
Fast connectivity, dedicated support and easy integration: the three pillars of our VoIP offering.
No compromises on voice quality
Transform business communication with clear, uninterrupted calls:
- Continuous monitoring of voice quality (MOS), latency and jitter
- QoS configured on the network to prioritise voice traffic
- HD codecs and certified devices for crystal-clear audio
- Line redundancy for service continuity
An expert technician always by your side
Our team is ready to assist you with dedicated, competent support:
- Fast response from in-house technicians, never automated answering systems
- Remote and on-site interventions across Lombardy
- Staff training on phones and switchboard usage
- Preventive maintenance and periodic updates
Seamless IT integration
Integrating VoIP telephony with your existing systems is quick and simple:
- Migration from ISDN lines and traditional PBXs with no downtime
- Integration with Microsoft Teams, Google Workspace, CRM and helpdesk tools
- Softphone apps on PC and smartphone for remote work
- Portability of existing numbers managed by us
How we operate: cloud and open-source VoIP switchboards
We support the setup and management of free VoIP switchboards, based on open-source platforms such as FreeSWITCH or free versions of 3CX. An ideal choice for organisations seeking maximum flexibility and control, with no licence costs. We customise every installation with professional features: IVR, call queues, call recording, reporting.
Every system is secured with firewalls, strong authentication and regular updates.

Professional VoIP provider: choose TN Solutions
As a VoIP provider for the business world, TN Solutions guarantees reliable business phone lines, with custom SIP trunks, real-time monitoring and competitive rates. Every project is tailored to the number of users, devices, integrations and voice traffic involved.
Our solutions also support integration with collaboration tools and helpdesk platforms, so the phone becomes part of the workflow rather than an isolated system.
Who we work with
We work with companies, technical firms, digital agencies, call centres and professionals who want to modernise their phone infrastructure. Our VoIP solutions for businesses suit both those starting from scratch and those migrating from ISDN or traditional PBX systems to modern IP platforms.
We also supply VoIP phones, SIP gateways, professional headsets and certified routers, providing a complete turnkey package.

VoIP security and technology
Every deployment is protected by advanced security policies: encrypted communications, VoIP firewalls, blacklisting, access control and regular backups. We monitor uptime, voice quality, latency and jitter to guarantee a consistent, reliable user experience.
If something goes wrong we respond quickly with human technical support, never automated. And if your network needs a preliminary check, our technicians assess it together with your switch and network equipment before activating the service.
Advantages of a professional VoIP provider
Here's why to choose TN Solutions as your VoIP provider for businesses:
- Reduced phone costs and transparent rates
- Scalable VoIP switchboard, accessible remotely too
- Compatibility with your business devices and software
- Call security and protection from unwanted access
- Professional technical support and tailored configuration
Frequently asked questions
What is VoIP and how does it work for businesses?
VoIP (Voice over IP) lets you make calls over the Internet instead of a traditional phone line. It's a technology that reduces costs, improves call quality and integrates easily with other digital systems such as CRM, helpdesk and collaboration tools.
What advantages does VoIP offer businesses?
It offers savings on phone costs, scalability, centralised line management, mobility (phone on PC or app too), call recording and integration with CRM and cloud tools. Adding an extension takes minutes, not a physical line intervention.
What does a professional VoIP service include?
It includes business VoIP lines, geographic numbering, extension management, virtual switchboard, reporting, technical support and plans tailored to your number of users and sites. TN Solutions also supplies the devices: IP phones, SIP gateways and headsets.
Is VoIP call quality reliable?
Yes, if the network is sized correctly. We configure QoS, dedicated bandwidth for voice traffic and latency/jitter monitoring: the result is quality equal to or better than a traditional line, plus extra flexibility and advanced features.
Other network and connectivity services for businesses
Quality IP telephony always starts with a well-designed network: see also switches, routers and business access points.
Ready to move your switchboard to the cloud with no risk?
One of our technicians will analyse your lines, traffic and infrastructure free of charge and propose the most suitable VoIP migration plan, with no service downtime.
08 / Talk to an expert
Talk to a VoIP telephony expert
Tell us about your current switchboard, we'll get back to you within one business day.
Describe the lines, extensions and voice traffic you want to manage: one of our technicians will contact you for a free initial discussion, no obligation and no automated answering.







