Cloud PBX Providers

Cloud PBX Providers

Luxembourg and the Greater Region. Service operators and PBX vendors. All reviewed independently against the same criteria.

How to choose a Cloud PBX provider

Cloud PBX offers differ in who owns the network, how pricing is structured, and which features are included out of the box. For businesses in Luxembourg, Belgium, France, and Germany, eight criteria tend to decide the shortlist. Work through them in order. Each one narrows the field.
01. Regulatory status
Is the provider ILR-licensed in Luxembourg, and where is voice data stored? Licensed operators are directly accountable under Luxembourg law and EU data rules. Resellers and foreign platforms sit one or more steps away from that accountability.
02. Network ownership
Who controls the voice path end to end? A direct operator owns the routing and carrier relationships. A reseller depends on a third party for the actual calls, which affects reliability, pricing flexibility, and how quickly issues get resolved.
03. Number coverage
Can you get local numbers in LU, BE, DE, and FR in one account, and can you port existing numbers in and out without friction? Cross-border teams in the Greater Region often need numbers in all four countries managed from a single system.
04. Pricing transparency
Are prices published on the website, or does every quote require a sales call? Published rates make comparisons fair and protect you from creeping bundle upsells. Quote-based models lock in vendor control over the commercial conversation.
05. Feature depth
Does the platform stop at basic calling, or does it include voicemail-to-email, call recording, IVR, AI transcription, analytics, and presence? Match the feature set to what your team will actually use, not to a checklist of everything on the market.
06. Integrations
Does the provider integrate with the tools your team already uses? Microsoft Teams, Odoo, HubSpot or other CRMs, SSO providers, and open APIs for custom workflows are the most common requirements for businesses in the region.
07. Support model
Who answers when something breaks, in which languages, and inside what hours? Local support in French, German, English, and Luxembourgish matters when a time-sensitive issue hits. Published response times matter more than marketing claims.
08. Deployment model
Is the service fully managed by the operator, delivered through a local partner, or self-hosted by your IT team? Match the deployment model to your internal resources. Under-resourced teams that pick self-hosted usually end up paying an integrator anyway.
🇱🇺 Greater Region specifics
Several factors are specific to businesses working across LU, BE, DE, and FR borders. ISDN is being phased out across the region, which forces a migration decision whether you planned for one or not. Cross-border staff typically need LU, BE, DE, and FR numbers managed in one system. Multilingual support in FR, DE, EN, and LU is expected at the operator level. GDPR and ePrivacy apply to every voice flow, including recordings and transcripts.

Featured: Voxbi, Cloud PBX by Mixvoip

Voxbi — Cloud PBX by Mixvoip LU
Native Luxembourg infrastructure. Published pricing. Greater Region number coverage across BE, DE, and FR. Operated by Mixvoip SA, ILR-licensed and active in Luxembourg since 2006. Voxbi is the house product behind this guide. Read the full Voxbi overview or see how it compares to other operators in the full comparison table.

Service Providers: 9 operators active in Luxembourg

State-owned national operator
POST Luxembourg's B2B brand. CloudPBX, CloudVoice, and Managed UC tiers. Largest network infrastructure in Luxembourg. LU
National mobile operator
Professional telephony bundles for SMEs and enterprises. Strong consumer brand with structured business offers. LU
03 | Tango
Second mobile network, Proximus Group
Cloud telephony for SMEs and enterprises with fixed-mobile convergence. Part of the Proximus Group. LU
04 | Cegecom
Business ISP and telecom
Cloud PBX and SIP Trunk solutions for SMEs and mid-size companies. Luxembourg-based. LU
05 | Mixvoip
VoIP specialist and network operator
Luxembourg-based VoIP operator. SIP Trunking, hosted telephony, and the operator behind Voxbi. LU
Business connectivity provider
Hosted telephony alongside business internet and managed IT services. LU
Business ISP, early VoIP provider
SIP trunking and hosted telephony for smaller businesses. One of the first ISPs in Luxembourg. LU
08 | Eltrona
Cable network operator
Business telephony and internet for SMEs, primarily in residential and semi-urban segments. LU
Belgian enterprise carrier
Managed IT and unified communications for mid-market and large organizations. Active in Luxembourg and the Greater Region. BE

PBX Vendors and Platforms

Ten platforms reviewed, grouped by what they actually are. Foreign telecoms you can buy service from. Vendor software you deploy yourself or through a partner. Global collaboration suites with a telephony add-on.

Foreign service providers

Telecom operators based outside Luxembourg that are active in the Greater Region.
Belgian enterprise carrier. Managed IT and unified communications for mid-market and large organizations across Luxembourg and the Greater Region.
Pan-European enterprise telecom arm of Orange. Active in Luxembourg for multinational accounts with complex cross-border requirements.

PBX software and appliance vendors

Platforms you deploy through a partner or self-host. The operator role is played by your integrator or your IT team, not the vendor.
Software PBX for Windows or Linux, self-hosted or cloud. Popular with IT resellers across Europe.
German appliance and cloud PBX. Strong installed base in DACH. Available as appliance, VM, or cloud.
Browser-based unified communications using WebRTC. Sold exclusively through certified Wildix partners.
German hardware and software PBX vendor. Strong partner ecosystem in the DACH region.
Open-source telephony framework. The foundation of many commercial PBX products. Requires technical expertise to deploy and maintain.
Open-source web interface built on Asterisk. Widely used for self-hosted deployments by small businesses and enthusiasts.

Global UC platforms

Collaboration suites with telephony offered as an add-on or partner integration.
Collaboration platform with telephony via Direct Routing or Operator Connect. Requires an existing Microsoft 365 subscription.
Enterprise unified communications suite. Used by large organizations with existing Cisco infrastructure.

Explore the rest of the guide

The comparison is one part of pbx.lu. The rest of the site covers what each feature does, how Cloud PBX fits specific industries, and the vocabulary behind the technology.
Learn what each Cloud PBX feature does and why it matters for your business. 14 feature guides.
See how Cloud PBX works across 12 industries, from law firms to retail chains.
FAQ
43 questions about setup, pricing, number porting, hardware, and security.
500 telephony and Cloud PBX terms explained in plain language.

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