EU Sovereignty Score
EU sovereignTelephony & VoIPHeadquarters: CH

VoIP-One PBX: sovereignty score and 8 European alternatives

VoIP-One PBX is a business telephone system built on the vendor's own VoIP software, offered by VoIP-One GmbH of Baar, Switzerland. Its functions include queues, voice menus, voicemail, conference rooms, call recording, call statistics, presence display and skill-based routing, and it works with SIP and standard desk phones. In the Virtual PBX variant the vendor operates the system, so only the phones remain in the office; a smartphone app handles call forwarding. The vendor also supplies SIP trunks and phone numbers.

VoIP-One GmbH is headquartered in Switzerland, which is not an EU member but an EFTA country with an EU adequacy decision. The vendor names no parent company. For Virtual PBX it states that the system runs in a data centre in Zürich, with automatic regular backups. The privacy statement is written with reference to the GDPR. Call metadata and recordings are personal data, so ask about the processing agreement and where call recordings are stored. The vendor's newer pages increasingly present AI communication services, while the PBX remains on offer.

See the 8 European alternatives ↓Assess your stack with VoIP-One PBX pre-selected
MastodonLinkedInBlueskyXEmail
Sovereignty score
67 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-380
    Hosting in Switzerland only (recognised by the EU as adequate)
  • Cryptographic key sovereignty SOV-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 14, 2026
Headquarters
CH (EU)Verified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
CHVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
Telephony & VoIP
Type
Product
Website
voipone.ch ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to VoIP-One PBX

The European alternatives to VoIP-One PBX come from our knowledge base of over 9,200 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

86 European Telephony & VoIP vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is VoIP-One PBX one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with VoIP-One PBX

VoIP-One PBX is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

VoIP-One PBX hosts data in Switzerland only. Switzerland is not part of the EU or the EEA, so the GDPR does not apply there directly; the European Commission does recognise Swiss data protection as adequate, so personal data can go there without extra safeguards. Our model therefore scores it between EU hosting and hosting outside Europe. If you require strictly EU hosting, take this into account.

VoIP-One PBX is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs VoIP-One PBX together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to VoIP-One PBX?

It depends on your use case. Strong EU alternatives to VoIP-One PBX include A1 Telekom Austria, Acrobits and Adversus. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to VoIP-One PBX?

Our list of EU alternatives to VoIP-One PBX is mostly commercial options. Browse the category on the map for open-source choices.

Is VoIP-One PBX GDPR-compliant and where is the data hosted?

VoIP-One PBX is headquartered in CH (EFTA) and hosts data in CH. That makes VoIP-One PBX an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 14, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in Telephony & VoIP

Telephony & VoIP: Business telephony, VoIP platforms, CPaaS and communication APIs. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

See all →
Open in the alternatives dashboardMissing a vendor? Submit itAre you this vendor? You can also become a sponsor on the Telephony & VoIP page — with no effect on your score
8 European alternatives to VoIP-One PBX — GDPR-compliant & EU-hosted · EU Sovereignty Score