📞 Mixvoip is a Luxembourg-based telecom operator, regulated by the ILR (Institut Luxembourgeois de Régulation). Founded in 2008, it is the second-largest fixed voice operator in Luxembourg. Mixvoip is also the operator behind pbx.lu and the parent company of Voxbi, the Cloud PBX product referenced throughout this site.
Who Is Mixvoip?
Mixvoip holds its own operator licence and runs its core infrastructure from Luxembourg data centres. It provides services to businesses across Luxembourg and the Greater Region: Belgium, Germany, and France.
The company covers four main service areas for business customers:
- SIP Trunks: Luxembourg's most experienced SIP trunk provider, certified for 3CX, Innovaphone, Wildix, and other major PBX platforms. SIP trunks connect an existing phone system to the public telephone network over the internet.
- Cloud PBX (Voxbi): Mixvoip's fully managed hosted phone system. No on-premise hardware required. See the Voxbi features overview for details.
- Business Internet: Dedicated internet connections, including a unique backup path via Eltrona's coaxial cable network, which is physically independent from fibre infrastructure.
- Mobile Services: Business SIM cards on the POST mobile network (Luxembourg's primary mobile network), MDM (mobile device management), and mobile data backup.
Full service details and pricing are available at mixvoip.com.
Who Are Mixvoip's Typical Clients?
Mixvoip serves several distinct business profiles:
- IT resellers and integrators who deploy 3CX, Innovaphone, or Wildix for their own clients and need certified SIP trunks to connect those systems. A non-compete clause protects resellers: Mixvoip will not approach their end clients directly.
- SMEs (5 to 250 employees) looking for a fully managed Cloud PBX with multilingual, Luxembourg-based support and no in-house IT requirement.
- Multi-site businesses with offices across the Greater Region that need one provider covering Luxembourg, Belgium, Germany, and France.
- Businesses with continuity requirements that need a backup internet path independent of their primary ISP. The Eltrona coaxial backup is unique to Mixvoip.
Voxbi vs. Other Providers: At a Glance
Criterion | Voxbi (by Mixvoip) | Typical competitor |
Operator regulated in LU | Yes, ILR-licensed | Varies |
Transparent public pricing | Yes | Rarely |
ISP independence | Yes, any connection | Sometimes locked to own ISP |
Greater Region numbers | LU, BE, DE, FR | Often LU only |
Local LU support team | Yes, multilingual | Often international call centre |
SIP trunk + Cloud PBX | Both, from one provider | Usually one or the other |
✅ Choose Voxbi if: You need a Luxembourg-regulated, ISP-independent Cloud PBX with transparent pricing, Greater Region number coverage, and local multilingual support.
🟡 Consider alternatives if: Your team is very small (1 to 3 users), you want the simplest possible setup with minimal configuration, and you do not need analytics, integrations, or cross-border numbers.
Detailed Comparison
💶 Pricing and Transparency
Mixvoip and Voxbi publish their prices on their respective websites. This is uncommon among Luxembourg telecom operators. Most local competitors use a quote-only model, which makes it difficult to compare costs without entering a sales process.
Voxbi pricing is available at voxbi.com. SIP trunk pricing is available at mixvoip.com. There are no hidden setup fees disclosed after quoting. For businesses that want to assess costs before speaking to a salesperson, transparent pricing is a practical advantage.
🌐 ISP Independence
Voxbi operates over any internet connection. Businesses can use any ISP, add a backup connection from a second provider, or failover to mobile data. Mixvoip also offers a unique coaxial backup path via the Eltrona cable network, which provides physical redundancy independent of fibre infrastructure.
Some Luxembourg competitors bundle their Cloud PBX with their own internet product and require customers to use both. Voxbi has no such requirement.
📱 Devices and Softphone
Voxbi supports desk phones (Yealink, Snom, and others), a desktop softphone for PC and Mac, and a mobile app for iOS and Android. All three options work on any internet connection and do not require a specific SIM or ISP.
Mixvoip SIP trunks are compatible with most standards-based IP phones and PBX systems. Businesses using an existing 3CX, Innovaphone, or Wildix system can connect it to the Mixvoip network without replacing hardware.
⚙️ Features and Integrations
Voxbi includes auto-attendant (IVR), call queues, call recording, voicemail to email, live dashboards, call analytics, CRM integrations, Microsoft Teams integration, and API access.
For businesses that only need basic call routing and do not require analytics or integrations, simpler products may be sufficient. Voxbi is better suited to businesses with multiple users, varying call volumes, or reporting requirements.
🗺️ Geographic Coverage
Mixvoip provides phone numbers in Luxembourg, Belgium, Germany, France, and additional countries. This is relevant for businesses with cross-border clients who expect to reach a local number in their own country.
Most Luxembourg-only operators provide Luxembourg numbers exclusively. Businesses with operations or clients in the Greater Region benefit from a single provider covering multiple countries.
📊 Support and Service Model
Mixvoip support is based in Luxembourg and operates in Luxembourgish, French, German, and English. This is relevant for businesses where staff communicate in multiple languages, which is common in the Greater Region.
Voxbi can be self-managed via its administration portal, or fully managed by the Mixvoip team. IT partners can also access a reseller portal to manage multiple clients. This provides three service models: self-service, assisted, or fully managed.
Frequently Asked Questions
Is pbx.lu affiliated with Mixvoip?
Yes. pbx.lu is an educational project operated by Mixvoip. The site aims to help business owners understand Cloud PBX before speaking to any provider, including Mixvoip. All competitor pages are written to be factual and vendor-neutral.
What is the difference between Mixvoip and Voxbi?
Mixvoip is the telecom operator: it holds the ILR licence, runs the network infrastructure, and provides SIP trunks, internet, and mobile services. Voxbi is the hosted Cloud PBX product that runs on Mixvoip's network. A business can use Mixvoip SIP trunks with its own PBX system, or use Voxbi as a fully managed hosted solution with no on-premise hardware.
Do I need to use Mixvoip internet to use Voxbi?
No. Voxbi works over any internet connection. There is no ISP lock-in. You can use your current internet provider and add Voxbi as an independent service.
Can Mixvoip provide numbers in Belgium, Germany, or France?
Yes. Mixvoip provides virtual geographic and non-geographic numbers in Luxembourg, Belgium, Germany, France, and other countries. These can be managed from a single account.
Is Mixvoip regulated in Luxembourg?
Yes. Mixvoip is regulated by the ILR (Institut Luxembourgeois de Régulation) and holds a full operator licence. Luxembourg data protection law (GDPR as applied in LU) applies to all data processed by Mixvoip.
Can IT resellers partner with Mixvoip?
Yes. Mixvoip has a reseller programme for IT integrators and managed service providers. A non-compete clause protects partners: Mixvoip will not approach their end clients directly. Contact the Mixvoip team via mixvoip.com for partner programme details.
Compare Other Providers
🔎 Exploring your options? Mixvoip is one of several business telephony providers available in Luxembourg and the Greater Region. Compare across providers to find the right fit for your business.
📡 Tango — National mobile and fixed operator. Fix4Bizz is a simple Cloud PBX bundled with Tango internet. ISP lock-in applies.
🏢 DEEP Telecom — Luxembourg's largest fixed operator. Full-service provider with enterprise-focused telephony and data centre services.
🔗 Cegecom — B2B-only provider with fibre-first infrastructure and managed voice services for businesses.
🌐 Proximus NXT — Belgian operator with a presence in Luxembourg, focused on mid-market and enterprise contracts.
📅 Ready to explore Cloud PBX for your business?
Start with the provider comparisons or feature guides. If you want expert help, book a short call with a consultant.
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