What is a cloud PBX, and how is it different from a desk phone setup?
A plain-language explainer on cloud phone systems for anyone weighing up a move off traditional lines.
May 28, 2026
EU mobile SIM with your company's fixed number
Bring your fixed business number to your mobile, with no app and no smartphone required. One professional number for every call, anywhere in Europe.
Your mobile should not blow your cover. The Voxbi EU SIM card brings your fixed business number straight to your phone, with no app and no smartphone required.
One number, one professional identity
With our fixed mobile convergence (FMC) SIM, every call you make shows your company's fixed-line number. When customers call back, the call routes into your Voxbi phone system, where colleagues can pick up and handle it.
It is built for people on the move: technicians, healthcare workers, and field staff who need to stay reachable while keeping work and private life separate. It is also one of the simplest ways to support the right to disconnect. When you are off duty, on holiday, or on sick leave, calls are handled by your company's system instead of ringing your personal mobile.
EU coverage, Luxembourg and international numbers
The Voxbi FMC SIM works across the EU and supports both Luxembourg and international fixed-line numbers. Two simple plans:
Pay as you use: from EUR 1.90 per SIM and EUR 1.30 per GB EU-wide. Ideal for mobile staff and teams that need connectivity without heavy data use.
Data package: 25 GB for heavier, regular use.
More than a basic SIM
Works with Teams, the cloud PBX, and SIP trunks
The SIMs fit naturally with Microsoft Teams, your Voxbi cloud PBX, and SIP trunks, so you get one connected experience wherever you are.
Replace your DECT system
Still on DECT handsets or costly wireless gear? Call colleagues by dialling their internal extension, just like from your desk phone, with no antennas, cabling, or setup costs.
National roaming
Switch mobile networks freely and stay on whichever gives you the best signal.
Works on any phone, even a Nokia 3310
No app, no configuration, no smartphone needed. The service runs on the SIM itself, so it works on any device, including the classic handset still sitting in your drawer.
Fleet data connectivity
Pop the SIMs into tablets or routers for affordable fleet data, perfect for work devices that should not burn data on social media.
Want one number on every device? See how Voxbi works across desktop and mobile, or book a demo.
