Your traditional telephony system is costing you money and causing frequent breakdowns. You have difficulty integrating your tools (CRM, reporting) and ensuring quality calls, without cumbersome hardware. This situation hampers the efficiency of your call center and prevents you from achieving true modernization.
In this guide, you’ll discover how to move from a traditional telephony system to a modern VoIP solution. We’ve selected 8 VoIP solutions offering HD calling and seamless CRM integration to transform your call center. Thanks to our detailed comparison and step-by-step guide, you’ll have all the keys you need to cut costs and improve call performance.
Points to remember :
- VoIP replaces conventional telephony with greater flexibility, lower costs and HD call quality. It works via the Internet, without heavy equipment, and is perfectly suited to telecommuting and call centers.
- The best VoIP solutions include key features such as unlimited calling, CRM integration, real-time supervision, automatic dialer… all without commitment or physical installation.
- Kavkom stands out in the comparison: easy-to-install solution, human support, unlimited calls, native CRM integration and mobile application. Ideal for call centers and SMEs in search of performance.
- To make a successful transition to VoIP, you need a good Internet connection, a CRM-compatible solution, responsive technical support and gradual deployment.
Defining the VoIP solution and its benefits
Visit VoIP (Voice over IP) is a technology that enables telephone calls to be made via the Internet, rather than the traditional telephone network. In practical terms, this means that voice is converted into digital data and transmitted over your Internet connection, just like e-mail or videoconferencing.
How does VoIP differ from traditional telephony?
- No need for fixed lines: VoIP works on all types of terminal (computers, smartphones, IP phones).
- No costly physical infrastructure: no need for complex wiring or on-site telephone exchanges.
- Integrated mobility: your teams can answer calls from anywhere, using the same line.
Key benefits for your company :
- HD call quality
With a good Internet connection, VoIP communications offer superior sound clarity to conventional lines. Ideal for call centers or demanding sales teams. - Reduced costs
A study by Frost & Sullivan shows that companies that have adopted VoIP have reduced their call costs by 20 to 40%.
No need for multiple telephone subscriptions or cumbersome equipment to maintain. - Centralize communications
All incoming and outgoing calls, recordings and voice messages are managed from a single interface. - Seamless CRM integration
VoIP connects easily to tools such as Salesforce, HubSpot or Zoho. Customer information is automatically displayed during the call, and data is synchronized in real time.
According to akio.com, VoIP calls are generally cheaper and more flexible, as they eliminate the need for physical phone lines and enable unified telephony management.
VoIP is the basis for modern, economical, mobile and high-performance telephony, perfectly suited to call centers looking for simplicity and agility.
Comparison: the 8 best VoIP solutions for businesses
Upgrading your telephony infrastructure with a VoIP solution can deliver performance, flexibility and cost savings. Here’s a comparison of the 8 most reliable solutions on the market, analyzed according to key criteria: features, cost, CRM integration, security, scalability and quality of support.
Here is a table summarizing the comparison:
| Rank | Solution | Best for | Key highlights | Entry price (excl. VAT/month) |
|---|---|---|---|---|
| 1 | Kavkom | Call centers & sales teams | Native CRM – Unlimited calls – French-speaking support | 8 / user €24 for unlimited calls |
| 2 | CloudTalk | CRM integration & advanced tracking | IVR visual – Real-time stats – 160+ numbers | 25 € / user |
| 3 | RingCentral | Scalability & multiple uses | Calls/visio – Integrated AI – +300 integrations | On quotation (≈ 20-30 €/util) |
| 4 | 3CX | In-house or cloud deployment | PBX – Visio – Self-hosted possible | Free → from €350/year |
| 5 | Dialpad | AI-powered telephony | Real-time AI – Coaching – SMS/Visio | 15 € / user |
| 6 | Aircall | Quick installation & native CRM | 100+ integrations – Transcriptions – Setup express | 30-40 € / user |
| 7 | Ringover | Simple interface & fast support | Unlimited calls – Omnichannel – Integrated AI | 21 € / user |
| 8 | OVH Telecom | Small businesses looking for savings & flexibility | SIP trunks – Unlimited fixed calls – No commitment | 0.99 / line |
1. Kavkom
Kavkom is a high-performance VoIP cloud solution designed for sales teams and call centers. It combines native CRM integration, real-time supervision and international virtual numbers. It’s easy to install, with no commitment, and features human support and unlimited prorated calls.
Key features :
- Virtual numbers in 50+ countries
- Integrated predictive dialer
- CRM integration via native API
- Real-time supervision
Highlights :
- No-commitment packages
- Unlimited calls billed on a pro rata basis from the beginning of the month, with no hidden cap.
- Responsive, human French-speaking support
- Hardware-free, easy-to-install cloud solution
- Mobile application compatible with iOS and Android
Disadvantages :
- UX perfectible
Rates :
- Basic : 8 €/util.
- More : 30 €/util.
- Pro: on request
Kavkom stands out for its excellent balance between functional power, price and simplicity. A particularly wise choice for call centers and demanding sales teams.
2. CloudTalk
CloudTalk offers a fluid, intuitive VoIP platform, with excellent international connectivity (160+ countries) and native integrations with 25+ CRMs. Its visual IVR, real-time statistics and advanced analysis tools make it an ideal solution for data-driven businesses.
Features :
- IVR visual, queue
- Real-time statistics
- 160 international numbers
- Integration with 25+ CRM / Helpdesk
Highlights :
- Fluid interface
- Powerful analytics tools
Disadvantages :
- Occasional peak-time blackouts
- Customer support can be slow
Rates :
- Starter: €25
- Essential: €29
- Expert: €49
- Enterprise: on request
3. RingCentral
RingCentral is an all-in-one VoIP solution combining calls, video, chat, AI and fax. Ideal for growing organizations, it boasts scalability, an ecosystem of over 300 integrations, and intelligent features such as automatic call summaries via AI.
Features :
- Calls, video, messaging, fax
- AI for call summaries
- +300 pro integrations
Highlights :
- Ultra-complete platform
- Very high scalability
- Tapering rates according to number of users
Disadvantages :
- Dense interface
- Longer learning curve
Rates :
- Depends on the number of users and the package chosen (Essentials, Standard, Premium or Ultimate)
4. 3CX
3CX offers a hybrid VoIP solution (cloud or on-premise), ideal for technical structures. With its PBX functions, hosting on your own servers, and integrated videoconferencing, it’s an economical and flexible choice for companies wishing to keep control of their infra-structure.
Features :
- Hosted software PBX
- Integrated videoconferencing
- WhatsApp integration
- Hosting on your servers possible
Highlights :
- Choice of cloud or on-premise
- Economical for 5-10 users or more
Disadvantages :
- Less CRM-oriented
- Requires sysadmin skills
Rates :
- Free version
- Then license from €350/year (3CX PRO)
- Or €425/year (3CX ENT)
5. Dialpad
Dialpad useson-board artificial intelligence to revolutionize telephony. Live transcription, voice coaching, visio, SMS… it’s all brought together in a modern interface, at an attractive price. Perfect for SMEs looking for an agile, innovative VoIP solution.
Features :
- Live transcription
- On-board AI (DialpadGPT)
- SMS, video, coaching
Highlights :
- AI active during call
- Good value for money
Disadvantages :
- Visio limited to 10 people.
- Bugs on mobile version
Rates :
- Standard: €15/user/month
- Pro: €25/user/month
- Enterprise: on request
6. Aircall
Aircall is a premium VoIP solution focused on user experience. Easy to install, it integrates with the leading CRMs (Salesforce, HubSpot…) and offers coaching and transcription. Ideal for demanding sales teams, despite its high price tag.
Features :
- Cloud call center
- 100+ integrations
- Coaching & automatic transcription
Highlights :
- Very quick installation
- Key CRM compatible (Salesforce, HubSpot…)
Disadvantages :
- High prices
- Advanced Analytics as a paid option
Rates :
- Essentials: €30-40/month/user.
- Professional: €50-70
- Custom: on request
7. Ringover
Ringover combines unlimited telephony, omnichannel channels (WhatsApp, SMS) and AI in a clear interface. Its ease of use and responsive French-speaking support make it an ideal VoIP solution for sales teams wishing to stay focused on the sale.
Features :
- Unlimited calls to 110 destinations
- Omnichannel (SMS, WhatsApp)
- AI for call summaries
Highlights :
- Clear, intuitive interface
- Fast, French-speaking customer support
Disadvantages :
- Inconsistent quality during peak periods
- Fewer APIs than RingCentral
Rates :
- Smart: €21/user/month
- Business: €44
- Advanced: made-to-measure
8. OVH Telecom
OVH Télécom’ s low-cost, no-commitment VoIP offering is ideal for small and medium-sized businesses. With unlimited calls to landlines, European datacenters and scalable SIP trunks, it appeals to businesses looking for flexibility and sovereignty.
Features :
- SIP trunk, including softphone
- Unlimited fixed calls FR
- Optional mobile numbers
Highlights :
- No commitment
- European data centers
Disadvantages :
- Rudimentary administration interface
- Few native integrations
- Limited use of foreign numbers
Rates :
- Discovery: €0.99/line
- Company: from €19.99
- SIP trunk: €1/channel + consumption
Improve performance and cut costs with a VoIP system
Adopting a VoIP telephony solution isn’t just about changing technology. It means profoundly transforming the way a company manages its inbound and outbound calls, while optimizing costs and overall performance.
Cost reduction: immediate savings
The costs associated with fixed lines, maintenance or hardware purchases are almost completely eliminated with VoIP technology. Everything works via the Internet: no need to multiply subscriptions or heavy equipment.
- Companies adopting VoIP save an average of 30-50% on telecom costs
Source : findstack.fr - A small business can save up to 40% on local calls and 90% on international calls, simply by choosing a good VoIP service provider
Source : en.bytegain.com
Operational efficiency: a real performance driver
With a VoIP communications solution, everything is centralized: calls, messages, customer data, supervision. Your teams can make and receive calls from their PCs or mobiles, wherever they are.
- A 100-employee call center using unified communications, including VoIP, can save up to 191 hours a day thanks to automation, reduced double handling and faster tools
Source : ceaseo.com - Thanks to advanced features such as autodialers, intelligent routing, real-time statistics and CRM integration, agents save time, and incoming call tracking is optimized.
- Telephone number management is simplified: fast portability, creation of international numbers, personalization by service.
Examples of indicators to track :
- Average response time
- Pick-up rate
- Number of missed calls
- Average cost per call
- First contact resolution rate
IP telephony systems offer real-time management tools to measure all these KPIs and adjust the organization on a daily basis.
Why switch to this communication solution?
Whether you’re an SME or a large corporation, switching to VoIP means :
- Immediate cost reduction
- Increased mobility (telecommuting, multiple offices)
- A scalable, easily configurable solution
- Concrete performance gains for companies of all sizes
It’s also an excellent way to receive calls seamlessly, without interruptions, and without technical complexity.
And the drawbacks of VoIP?
No solution is perfect. Here are the limits to keep in mind:
- Dependence on Internet connection quality
- Risk of power cuts in the event of a network failure
- Requires careful initial configuration (QoS, bandwidth, etc.).
- Without encryption and access control, communications can be vulnerable
But with a reliable VoIP service provider, a good infrastructure, and tools like Kavkom, these obstacles are largely manageable.
In a nutshell: replacing a fixed-line telephony solution with a well-integrated VoIP solution means moving into a new era of communications, one that’s more agile, more economical and more efficient.
FAQ – Frequently asked questions
How can you effectively compare the VoIP service providers available on the market?
Start by checking the essential criteria: call quality, pricing (unlimited packages or not), CRM integration, RGPD compliance, human technical support and ease of deployment. Read user reviews and compare features.
What are the key criteria for deploying a high-performance VoIP solution in a call center?
- Stable Internet connection and sufficient bandwidth
- Intelligent call routing (IVR, queues)
- Native CRM integration
- Real-time supervision (dashboards, recordings)
- Responsive, French-speaking technical support
Kavkom, for example, ticks all these boxes and makes it easy to set up without any hardware or commitment.
How to optimize CRM integration with a VoIP telephony service to boost productivity?
Choose a VoIP solution that offers native integration or an open API. This allows you to automatically retrieve customer records during calls, record the history of exchanges, and automate tasks (reminders, notes, reminders).
Conclusion
Switching to a VoIP solution is much more than a technological change. It’s a concrete opportunity to modernize your communications, reduce your costs and boost the efficiency of your teams. With advanced features such as real-time supervision, CRM integration and unlimited hardware-free calling, VoIP is becoming a strategic lever for call centers and growing businesses.
Savings can reach up to 50%, and productivity gains are immediately measurable. But to reap the full benefits, it’s essential to choose a solution that’s reliable, easy to deploy and well supported.
This is where Kavkom stands out: fast installation, dedicated human support, flexible pricing, and tools designed for performance.
A safe choice for those who want professional telephony… without the fuss.
