Mixvoip is one of the most experienced SIP trunk providers in Luxembourg, trusted by local and international businesses since 2008. With deep market integration, extensive interoperability, and proven reliability, our SIP trunking solutions are built for companies that need stable, high-quality voice services.
Over 15 years of experience
Operating since 2008, we have a long-standing presence in the Luxembourg telecom market.
Second-largest fixed-line operator
According to official data from the national telecom regulator, Mixvoip holds the second-largest market share in Luxembourg for fixed voice traffic.
Direct interconnects with national operators
We maintain direct SIP interconnections with all major telecom providers in Luxembourg. This reduces call latency, avoids unnecessary transit paths, and speeds up call setup.
Global carrier-grade connectivity
Our SIP platform is connected to multiple international number wholesalers, enabling global reach and high-quality termination routes.
Regulated in 20+ countries
Mixvoip is officially regulated in over 20 countries, making us a reliable partner for multinational companies with a presence in Luxembourg.
Local partner for international telcos
Several major international telecom providers use Mixvoip’s infrastructure to deliver services in Luxembourg to their global clients. We operate behind the scenes, ensuring technical stability.
Speak directly with our experts who are ready to provide insights and answers.
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Mixvoip supports every phone system that uses the SIP protocol, ensuring compatibility with all modern PBX systems. Through the Mixvoip Certification program, we guarantee setup, support and ongoing functionality. Our rigorous certification process ensure your business communications run smoothly. See our certified list of certified PBX brands.
Use your fixed office number on your mobile. Our SIM cards let you display your SIP trunk number with or without extension directly from your mobile device.
Our SIP trunking solutions start from one channel and can scale up to hundreds, making it suitable for businesses of all sizes. This flexible scaling allows your system to grow with your needs without extensive initial costs. Our competitive call rates significantly reduce your phone bills, providing cost-effective communication solutions.
Even if you’re currently under contract with another provider, you can use Mixvoip's SIP Trunking as a backup or overflow solution. This ensures that you can maintain service continuity and manage call costs effectively when your primary provider is unavailable.
Enjoy free calls between multiple sites, trunks, and phone systems within your organization and with other Mixvoip customers. This feature helps to further reduce costs and simplifies internal communications across your operations.
Mixvoip's SIP trunking services offer extensive international phone number coverage, allowing businesses to establish a local presence in numerous countries around the world. We provide local, national, and toll-free numbers across various markets, ensuring that your business can operate globally while maintaining a local touch.
Mixvoip SIP trunks are fully Microsoft Teams compatible via Microsofts Direct Routing capabilities. This integration ensures that users can make and receive calls on Teams using standard office numbers. This setup is ideal for organizations looking to extend the functionality of their Microsoft Teams platform by integrating external calling capabilities.
For detailed information about channel and monthly pricing, visit our SIP trunk pricing page.
To view call rates for national and international destinations, see our call rates page.