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Cloud Telephony (VoIP & Cloud PBX)

fonial

EU-Made Report an error

Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by fonial GmbH · www.fonial.de

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fonial: AI-assisted analysis on whats-best.ai fonial: AI-assisted analysis on whats-best.ai (dark)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

fonial at a glance

Vendor
fonial GmbH
Headquarters
Not stated on the vendor’s pages as of 5 Nov 2026
Data hosting
Not stated on the vendor’s pages as of 5 Nov 2026
Free plan
Not stated on the vendor’s pages as of 5 Nov 2026
Panel verdict
The AI panel rates fonial 3/5, the mean of 6 judges. fonial, a Cologne cloud-telephony vendor (fonial GmbH, HRB 83052, an EnBW subsidiary) selling a cloud PBX and SIP trunking, scores highest on pricing transparency — a flat 8 — and sovereignty at 7-8. how scores are made
As of
Vendor pages captured 5 Nov 2026; evaluated by the panel 6 Nov 2026. all sources

fonial alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The Skeptic

Weighted verdict

Has seen "all calls included" that excluded mobile numbers abroad, a "five-minute setup" followed by six weeks of porting, and an "AI assistant" that sent every recorded call to a model in the US. Asks what porting the numbers back out costs and how long it takes, whether the desk phones still work after leaving, who carries the calls, what the SLA pays when the platform is down — and what the second year costs.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The Skeptic

Panel median The Skeptic This judge’s scores over the panel median. Each label opens its reasoning below.
Scores per criterion, in stars out of 5
Criterion Panel median The Skeptic
Calling, numbers & call routing 3 of 5 3 of 5
Apps, desk phones & Microsoft Teams 2 of 5 2 of 5
Call centre, analytics & AI 2.5 of 5 2.5 of 5
CRM integration, API & administration 2 of 5 2 of 5
Reliability, call security & telecoms compliance 2.5 of 5 2.5 of 5
European sovereignty 4 of 5 4 of 5
Pricing transparency 4 of 5 4 of 5

Calling, numbers & call routing

How this is scored

What the phone system does with a call: local geographic numbers in the customer's own area code and in other countries, number blocks and porting of existing numbers, extensions, IVR menus, queues, ring groups and hunt groups, time-based and holiday routing, call forwarding and transfer, voicemail to email, fax to email, conference calls, call recording, call park and pickup, busy lamp fields, caller ID per user or team, and emergency calls (110 and 112) with the caller's location.

0 — Places no phone calls on the public telephone network; a chat or meeting tool with internal calling only.

3 — Phone numbers and extensions with forwarding and voicemail; IVR, queues, time-based routing and porting are basic or not described.

5 — Local numbers in the customer's area code with porting documented, IVR menus, queues and ring groups, time-based and holiday routing, voicemail to email, call transfer and pickup, call recording, fax or fax to email, and emergency calling described.

8 — Number blocks and international numbers in many countries, a visual call flow editor, skills or priority routing, call park and busy lamp fields, recording rules per user or queue with consent announcements, emergency calls with a registered location per user or site, and the porting process and its timelines documented.

10 — Call handling a large multi-site company runs on: every feature above with number provisioning and porting by API, routing by caller data from the CRM, location-aware emergency calling for home offices, and the full feature set documented per plan with its limits.

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The Skeptic

Numbers from all 5,200 German local networks, free porting in, IVR with time-based and caller-based routing, queues with skill-based routing, ring groups, busy lamp fields, pickup, voicemail-to-email and fax to email are all documented, and number blocks are priced on the trunk side. But we found no public information on call recording, on emergency calls with a registered location, on international inbound numbers, or on how long a port actually takes — and new Teams customers must port their number to fonial first, while the terms for porting it back out are not shown. 1 3 8 14 15 16 20

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Apps, desk phones & Microsoft Teams

How this is scored

Where the calls are made and taken: desktop and mobile softphone apps, a browser client, presence, desk phones and DECT handsets from named makers (Yealink, Snom, Gigaset, Poly, Cisco) provisioned automatically, devices for sale or rent, the mobile phone as an extension with the company number shown, fixed-mobile convergence, Microsoft Teams calling through Direct Routing or Operator Connect, headset support, and the apps' ratings and update notes.

0 — No app and no device support; calls only through hardware the customer configures by hand.

3 — A softphone or mobile app; desk phones, Teams calling and the company number on mobile are basic or not described.

5 — Desktop, mobile and browser apps with presence, desk phones from named makers provisioned automatically, the company number shown on outgoing mobile calls, call handover between devices, and a Microsoft Teams integration or connector.

8 — A list of supported desk and DECT phones with auto-provisioning documented, devices sold or rented, Microsoft Teams calling through Direct Routing or Operator Connect with certification stated, fixed-mobile convergence with a SIM or mobile network, and app features documented per platform.

10 — Every endpoint a workforce uses, managed from one place: desk, DECT, mobile, browser and Teams with feature parity stated, device fleet management and firmware updates from the portal, and the app's accessibility and offline behaviour documented.

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The Skeptic

A mobile softphone app runs the one local number on every device, Microsoft Teams can serve as the full phone system with an automated setup, and any IP-capable device is said to work. But snom, Gigaset, Yealink and Mitel appear on the site only as credits for product images, so we found no public information on automatic desk-phone provisioning, devices for sale or rent, presence, call handover, or Direct Routing and Operator Connect certification — and the captured pages note that forwarding calls from the Teams client is currently only possible to a very limited extent. 2 3 11 16 17 20

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Call centre, analytics & AI

How this is scored

How a team that lives on the phone is run: ACD queues with skills and priorities, agent states and wrap-up time, a wallboard, live monitoring with listen, whisper and barge, callbacks instead of waiting, outbound and power dialers, call statistics and reports per agent and queue, missed-call handling, AI transcription, summaries and sentiment, an AI receptionist or voicebot, and SMS or WhatsApp beside calls.

0 — No queues or call statistics of any kind; calls ring until someone answers.

3 — A simple queue and a call history; agent states, live monitoring, reports and AI features are basic or not described.

5 — Queues with agent log-in and log-out, wrap-up time, a wallboard or live view, call statistics per agent and queue, missed-call lists with callback, call recording for coaching, and AI transcription or summaries offered.

8 — Skills-based routing, listen, whisper and barge, callback in queue, outbound or power dialers, scheduled and exportable reports, AI transcription, summaries and sentiment with the languages listed, an AI receptionist or voicebot, and SMS or messaging channels beside calls.

10 — A contact centre that replaces a separate suite: workforce management and quality scoring, omnichannel routing, real-time AI coaching, and every AI feature documented with its model provider, data handling and an opt-out.

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The Skeptic

Waiting queues with skill-based routing, individual announcements and unlimited queues are included in the PLUS tariff, and an AI phone assistant answers, prioritises and sends call summaries or detailed transcripts by email in German, English and further languages — though the AI software itself comes from fonial-certified partners such as ScaleTalk, with fonial providing the infrastructure. What a phone team actually runs on is thinner: we found no public information on agent states, wrap-up time, a wallboard, listen, whisper and barge, callbacks in queue or statistics per agent and queue — the dashboard shows a cost overview and an event monitor, not agent reporting. 2 3 18 19 20

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CRM integration, API & administration

How this is scored

How the phone system fits the company: integrations with CRM and helpdesk tools (Salesforce, HubSpot, Pipedrive, Zendesk, Microsoft Dynamics) with click-to-call, caller pop-ups and automatic call logging, a documented REST API and webhooks for call events, SIP trunks for an existing PBX and bring-your-own-carrier, an admin portal with roles, single sign-on (SAML) and SCIM, two-factor authentication, multi-site and multi-company set-up, bulk user import, audit logs, and partner or reseller accounts.

0 — No integrations and no administration beyond one login per number.

3 — A web portal to manage users and numbers and one or two integrations; the API, roles and SSO are basic or not described.

5 — Integrations with the common CRM and helpdesk tools with click-to-call and call logging, a documented REST API and webhooks, an admin portal with roles, two-factor authentication, several sites in one account, and SIP trunking or a connection to an existing PBX.

8 — Caller pop-ups and call data written to the CRM record, an API covering users, numbers, routing and call records, single sign-on (SAML) and SCIM provisioning, audit logs, bulk import and templates, partner or reseller accounts with sub-customers, and SIP trunks documented for named PBX systems.

10 — Administration that scales across many sites and companies: every setting reachable by API with parity stated, granular roles per site and team, SSO enforced with SCIM, audit logs exportable to a SIEM, and a partner portal with white-label and separate billing.

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The Skeptic

A browser admin with Administrator, Manager and employee roles, several locations in one central account, a 3CX-compatible SIP trunk, LDAP and the Teams integration are documented. The fonial API is HTTP-POST with JSON, must first be unlocked by support, and covers certain functions — dialling from applications, retrieving call data, callbacks — rather than full administration; we found no public information on named CRM integrations with caller pop-ups and call logging, webhooks, single sign-on, two-factor authentication, audit logs or bulk import. The CRM, calendar and webhook integrations described belong to the AI partner ScaleTalk. 3 4 5 16 18 21

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Reliability, call security & telecoms compliance

How this is scored

Whether the service holds on a bad day and in an audit: redundant data centres and carrier connections, a stated availability or SLA with credits, the vendor's own public status page and incident history, call quality measures (codecs, quality monitoring), encryption of signalling and media (TLS and SRTP), registration as a telecoms provider with the national regulator (Bundesnetzagentur or its EU equivalent), the secrecy of telecommunications, recording consent and retention, emergency call handling for remote users, fraud protection against toll fraud, and security certifications such as ISO 27001.

0 — Nothing on availability, security or the provider's status as a telecoms operator.

3 — A claim of high availability or "German data centres"; encryption, the SLA, the status page and regulatory status are basic or not described.

5 — Redundant data centres named by country, a public status page, TLS and SRTP encryption offered, the provider's registration with the national regulator or the carrier behind the numbers stated, a stated availability, and call recording rules described.

8 — An SLA with credits published, the incident history public, encryption on by default with the protocols documented, ISO 27001 or comparable certification with its scope, toll fraud protection and spending limits, emergency calls from softphones and home offices documented, and retention of recordings and call records stated.

10 — Carrier-grade operation evidenced: geo-redundant platforms with failover tested and published, end-to-end encryption options, independent audits (ISO 27001, BSI C5 or SOC 2) with reports available, and the regulatory and lawful-interception obligations explained in plain language.

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The Skeptic

Three geo-redundant data centres in Germany run by the hosting partner Plusnet, whose data-centre quality is TÜV-certified, a public status page, the Bundesnetzagentur named as supervisory authority, carriers Deutsche Telekom, Vodafone and Telefonica, and connection data deleted after the statutory period give a real telecoms footprint. But the ISO 27001 and 9001 certificates belong to Plusnet and are available as a download or on request; the only availability statement is a marketing claim of 100 % Ausfallsicherheit, with no published SLA credits — an SLA document is only listed — and we found no public information on TLS or SRTP for calls, toll-fraud protection, or emergency-call handling for home offices. Fonial caps its own liability at 12,500 € per case and 30,000 € per contract year. 5 6 9 10 11 12 22

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European sovereignty

How this is scored

Who the contracting entity and the parent company are, where call records, voicemails, recordings, transcripts, contacts and account data are stored and processed, which carriers carry the calls, and who the subprocessors are (hosting, carriers and number providers, SMS gateways, AI transcription and summary models, email delivery, support and payment tools). Independently sourced by the sovereignty pipeline. International numbers and carriers needed to reach other countries are part of what the product does and are not counted against it; where the data is stored and who processes it is. A self-hosted phone system the customer runs on its own European servers counts as the customer's chain, whatever the vendor's seat.

0 — Non-EU vendor and contracting entity, hosting unstated, subprocessors unnamed, and no data processing agreement offered.

3 — A privacy policy and a data processing agreement exist, but hosting location is unstated or non-EU and the subprocessors are not listed.

5 — EU hosting available and an EU contracting entity or EU representative, but parts of the chain (AI transcription, SMS, support, payment) run through non-EU providers without a stated safeguard.

8 — EU hosting on named infrastructure, EU contracting entity, subprocessors listed with their locations, a data processing agreement published, and security certifications (ISO 27001, SOC 2) stated — or a self-hosted edition documented that keeps every record on the customer's own servers.

10 — Sovereign end to end and evidenced: European ownership, entity, hosting, carriers and every subprocessor including the AI models, or a self-hosted edition with no call home, data export and deletion documented, and certifications published with their scope rather than implied.

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The Skeptic

fonial GmbH of Cologne (HRB 83052), a subsidiary of the German EnBW group, hosts in three German data centres of Plusnet GmbH, carries calls via Deutsche Telekom, Vodafone and Telefonica, publishes a data-processing agreement with TOMs as a download, and names subprocessors with their countries — Allnet in Germany, BunnyWay in Slovenia, PayPal in Luxembourg. Two soft spots: Google is a processor with a Privacy Shield certification cited as the safeguard, and where the certified AI partners like ScaleTalk process calls and data is not stated. The ISO 27001 certification on the site is the hoster's, not fonial's own. 6 10 11 13 18

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Pricing transparency

How this is scored

Whether a buyer can compute the real annual cost from public pages alone: price per user or extension and per plan, what numbers, number blocks and porting cost, which calls are included in a flat rate (landline, mobile, international) and what the rest cost per minute, which features (call centre, recording, AI, CRM integrations, Teams calling) cost extra, device prices or rent, set-up fees, minimum term and notice period, and VAT.

0 — No public prices at all; every customer is a sales call or a partner quote.

3 — A starting price per user exists, but what numbers, minutes, porting and add-ons cost is unclear.

5 — Plans are public with their price per user and main inclusions, but at least one commonly needed piece (number blocks, porting, international minutes, call centre seats, AI or recording) is unpriced or "on request".

8 — Every plan priced publicly with its scaling rule, a per-minute price list for calls outside the flat rate, numbers, porting and devices priced, add-ons priced, set-up fees, minimum term and VAT treatment stated.

10 — Complete price computability: annual cost derivable for a given number of users, numbers, sites and call minutes, with every add-on, device, porting and support fee and the cancellation and number-export terms published.

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The Skeptic

Prices are unusually complete: 3,90 € net per activated number per month, 0,00 € set-up, monthly cancellable with one month's notice, free porting, number blocks at 20,00 € net and sequential numbers at 10,00 € one-time, per-minute rates net and gross for landline, mobile and international, flat rates whose 750-minute fair-use volume is stated in the terms, Teams at 9,90 € per account, trunks from 0,80 € per channel with minimum revenues named, plus a downloadable total price list and a calculator. Still not fully computable: the optional personal set-up service is bookable without a price, the international rates show examples rather than a full country list, and the AI assistant at 99 € / Monat with 500 voice-AI minutes is bought through a partner with a discount code. Porting in costs nothing; we found no public information on what taking the numbers back out costs. 7 8 12 16 18 19

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European sovereignty — proven facts

0 of 6 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Hosting location Not determined ⚠ unverified — uncited Report an error
Hosting options Not determined — uncited Report an error
Open source Not determined — uncited Report an error
Data processing agreement Not determined ⚠ unverified — uncited Report an error
Transfer impact assessment Not determined — uncited Report an error

Questions about fonial

Is fonial European?

Yes. whats-best.ai classifies fonial as EU-Made.

Where does fonial store data?

Not stated on the vendor’s pages as of 5 Nov 2026.

Does fonial have a free plan?

Not stated on the vendor’s pages as of 5 Nov 2026.

What are the best alternatives to fonial?

As of 6 Nov 2026, the panel rates Placetel (3.5/5), RingCentral RingEX (3/5) and Aircall (3/5) highest among the other 13 Cloud Telephony (VoIP & Cloud PBX) products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is Placetel (EU origin, foreign-owned). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: fonial alternatives.

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

Do you know more about fonial? Tell us Report an error on this page

Sources (23)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor homepage www.fonial.de Checked 5 Nov 2026 Details →
  2. 2 Features page (cloud PBX) www.fonial.de Checked 5 Nov 2026 Details →
  3. 3 Features page www.fonial.de Checked 5 Nov 2026 Details →
  4. 4 Features page (SIP trunking) www.fonial.de Checked 5 Nov 2026 Details →
  5. 5 API documentation www.fonial.de Checked 5 Nov 2026 Details →
  6. 6 Security / trust page www.fonial.de Checked 5 Nov 2026 Details →
  7. 7 Pricing page (cloud PBX) www.fonial.de Checked 5 Nov 2026 Details →
  8. 8 Pricing page (SIP trunking) www.fonial.de Checked 5 Nov 2026 Details →
  9. 9 Public status page www.fonial.de Checked 5 Nov 2026 Details →
  10. 10 About page www.fonial.de Checked 5 Nov 2026 Details →
  11. 11 Legal notice www.fonial.de Checked 5 Nov 2026 Details →
  12. 12 Terms of service www.fonial.de Checked 5 Nov 2026 Details →
  13. 13 Privacy policy www.fonial.de Checked 5 Nov 2026 Details →
  14. 14 Calling, numbers & call routing — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  15. 15 Calling, numbers & call routing — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  16. 16 Apps, desk phones & Microsoft Teams — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  17. 17 Apps, desk phones & Microsoft Teams — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  18. 18 Call centre, analytics & AI — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  19. 19 Call centre, analytics & AI — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  20. 20 CRM integration, API & administration — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  21. 21 CRM integration, API & administration — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  22. 22 Reliability, call security & telecoms compliance — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
  23. 23 Reliability, call security & telecoms compliance — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →