Cloud Telephony (VoIP & Cloud PBX)
fonial
EU-Made Report an error0–5 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 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
Read this page as one judge. Each weighs the same scores by what they care about.
The panel's verdict
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. Prices are public line by line: 3,90 € net per activated number per month, 0,00 € set-up, free porting, monthly cancellation, plus a downloadable price list and calculator. The German chain is documented — Plusnet's three geo-redundant German data centres, named subprocessors in Germany, Slovenia and Luxembourg — though the ISO 27001 is the hoster's, Google appears with a Privacy Shield certification cited as the safeguard, and where the AI partner ScaleTalk processes calls is not stated. Calling and routing lands at 5-6 (numbers from all 5,200 German local networks, queues with skill-based routing in the PLUS tariff), and network and compliance at 5-6. Weakest are apps and devices, contact centre and integration and admin, each 4-5, where we found no public information on desk-phone provisioning, agent states, wallboards, CRM pop-ups, single sign-on, SLA credits or emergency calling. Score spreads never exceed one point.
Speaks for it
- Pricing is public line by line — 3,90 € net per activated number per month, 0,00 € set-up, free porting, monthly cancellation — with a downloadable total price list, a calculator and a worked example.
- The sovereignty chain is documented: fonial GmbH of Cologne as an EnBW subsidiary, hosting in Plusnet's three German data centres, named subprocessors, and a data-processing agreement with TOMs downloadable in the customer account.
- Numbers from all 5,200 German local networks with free porting, an IVR with up to ten actions, and unlimited queues with skill-based routing included in the PLUS tariff.
- Microsoft Teams can serve as the full phone system with an automated setup, at 9,90 € per account.
- A public status page, the Bundesnetzagentur named as supervisory authority, and carriers Deutsche Telekom, Vodafone and Telefonica named.
Held against it
- We found no public information on call recording, on emergency calls with a registered caller location, or on how long a porting takes.
- The named phone makers snom, Gigaset, Yealink and Mitel appear on the site only as image credits, and we found no public device prices.
- We found no public information on agent states, wallboards, live monitoring or statistics per agent and queue — the documented dashboard shows a cost overview and an event monitor.
- The HTTP/JSON API must first be unlocked by support and covers click-to-dial and call records rather than full administration, and we found no public information on single sign-on or two-factor authentication.
- The ISO 27001 and ISO 9001 certificates belong to hosting partner Plusnet, the only availability statement is the 100 % Ausfallsicherheit marketing claim, and we found no published SLA credits.
Best for
- You need a German cloud phone system for a small office or multi-site team and want to compute the full monthly cost from public prices.
- Your procurement requires a German contracting entity with named hosting and subprocessors, and you can accept that the voice AI runs on a certified partner platform.
- Your team already uses Microsoft 365 and wants Teams as the phone client at 9,90 € per account.
- You need SIP trunking alongside the PBX — number blocks, 1 to 200 channels, compatibility with PBX systems such as 3CX.
Avoid if
- You run a supervised hotline or contact centre and need wallboards, agent states or per-agent statistics — the documented dashboard is a cost overview and an event monitor.
- You depend on auto-provisioned desk phones or a DECT fleet — the named makers snom, Gigaset, Yealink and Mitel appear on the site only as image credits.
- You need CRM caller pop-ups, automatic call logging or single sign-on on day one — the documented API must be unlocked by support and covers click-to-dial and call records.
- You need an availability commitment with credits in writing before signing — ask the vendor: the public pages we read do not show it
The scores
| Criterion | Panel median |
|---|---|
| Calling, numbers & call routing | 3 of 5 |
| Apps, desk phones & Microsoft Teams | 2 of 5 |
| Call centre, analytics & AI | 2.5 of 5 |
| CRM integration, API & administration | 2 of 5 |
| Reliability, call security & telecoms compliance | 2.5 of 5 |
| European sovereignty | 4 of 5 |
| Pricing transparency | 4 of 5 |
Calling, numbers & call routing
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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.
The Office Manager
Porting our thirty-year letterhead number is documented as free, numbers are held in all 5,200 German area codes, and the queue with skill-based routing, the IVR menu with custom announcements and time-based switching, voicemail delivered to email as a.wav attachment, ring groups, pickup and busy lamp fields are all documented for the cloud PBX. Number blocks are documented for the SIP trunking product rather than the phone system itself. We found no public information on call recording or on emergency calls with the caller's location. 1 3 4 14 15 20
The IT Administrator
Numbers from all 5,200 German local networks with free porting, an IVR with up to ten actions and time-based rules, unlimited queues with skill-based routing, ring groups, busy lamp fields, pickup and every forwarding variant are documented in real depth. For my three sites it stays short of the top marks because we found no public information on call recording, on emergency calls with a registered caller location, or on how long a porting takes. 1 3 4 7 14 15
The Contact Centre Lead
The routing core covers what my hotline needs: numbers from all 5,200 German local networks, free porting, an IVR with up to 10 actions and time-based control, queues, ring groups, forwarding rules with priorities plus caller-number and date filters, voicemail to email and three fax variants. We found no public information on call recording or on emergency calling with the caller's location, and both belong in writing before I move a German hotline. 1 3 14 15 20
The Inside Sales Lead
Numbers from all 5,200 German local networks, free porting and free new numbers cover our German footprint, with unlimited queues, skill-based routing, IVR with time-based rules and prioritised forwarding rules documented in the PLUS tariff. We found no public information on call recording, on numbers outside Germany for Austria and Switzerland, or on emergency calling, which keeps this below the top band. 1 3 14 15 20
The Data Protection Officer
Numbers from all 5,200 German local networks with free porting, an IVR with up to ten actions and time-based routing, unlimited forwarding rules with priorities and caller-number filters, queues with skill-based routing, ring groups, pickup, busy lamp fields and fax to email are all documented. Two things stay open before I clear this for the practices: we found no public information on call recording or on emergency calls, and no porting timelines are stated. 1 3 4 14 15 20
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
Apps, desk phones & Microsoft Teams
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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.
The Office Manager
Microsoft Teams as a full phone system and the mobile softphone app carrying our single landline number on every device are documented, with candid notes that forwarding from the Teams client is currently very limited and an admin must set the integration up. Desk phone support rests on a general statement that any IP-capable device works; we found no public information on a list of phones from named makers with automatic provisioning, on devices for sale or rent, or on app ratings. 2 3 16 17 20
The IT Administrator
The Teams integration is documented thoroughly — calls from the Teams client, automated setup in under five minutes, one account for the whole team — and mobile devices join as full IP endpoints carrying the same number on all devices. But we found no public information on a supported desk and DECT phone list with automatic provisioning, on presence or device fleet management; a status notice shows device provisioning exists as an operational function, yet my production halls on DECT would be a step into the undocumented. 2 3 9 16 17 20
The Contact Centre Lead
Teams as a full phone system with an automated setup, and mobile devices as full IP endpoints via softphone app or the native SIP client of some Android phones, are properly documented, with one geographic number running on all devices. We found no public information on presence or on a documented list of auto-provisioned desk phones — snom, Gigaset, Yealink and Mitel appear only as image credits — so I would test every endpoint myself before trusting it to eighteen agents. 2 11 16 20
The Inside Sales Lead
The Teams integration is documented in real depth — calls from the Teams client, automated setup in under five minutes, one account for the whole team — and the mobile device runs as a full IP endpoint carrying one and the same local number on every device, which is exactly what my reps need at trade fairs. We found no public information on presence, on a list of supported desk phones with automatic provisioning, or on devices sold or rented. 2 3 16 20
The Data Protection Officer
Microsoft Teams can serve as the full phone system with an automated setup in under five minutes, and one local number works on the smartphone app, in the office, in the home office and abroad; any IP-capable device is supported. The named makers snom, Gigaset, Yealink and Mitel appear only in image credits, and we found no public information on a supported-device list with auto-provisioning, on presence, or on devices for sale or rent. 2 3 11 16 17 20
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
Call centre, analytics & AI
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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.
The Office Manager
Unlimited queues with skill-based routing and individual waiting announcements are included in the fonial PLUS plan at no extra cost, and an AI phone assistant that answers calls, books appointments and sends call summaries or transcripts by email is offered through a German partner platform. The trunking tariffs are aimed at inbound and outbound call centres, including integration with predictive dialers. We found no public information on agent states, a wallboard, listen-in functions or call statistics per agent and queue. 2 3 18 19
The IT Administrator
Unlimited queues with skill-based routing and individual waiting announcements, missed-call notifications on the device and by email, and an AI phone assistant with call summaries and transcripts via the German ScaleTalk partner are documented, and the trunk is positioned for inbound and outbound call centres. We found no public information on agent states and wrap-up time, a wallboard, live monitoring or statistics per agent and queue — the daily layer my service team abroad would live in. 3 18 19 2
The Contact Centre Lead
Unlimited queues with skill-based routing and individual waiting announcements included in PLUS at no extra cost is exactly my Monday answer, and the partner voice assistant delivers a call summary or transcript by email in German and English — the summaries nobody has to type. For running the team, though, we found no public information on a wallboard, listen, whisper and barge for training new agents, agent states and wrap-up time, reports per agent and hour, or a callback offered to callers waiting in the queue. 2 3 16 18 19
The Inside Sales Lead
Unlimited waiting queues with skill-based routing are included in PLUS, missed calls are notified by email with the caller's number, and the AI assistant from partner ScaleTalk sends call summaries or full transcripts by email with native CRM, calendar and webhook integrations — the AI notes a rep needs before the follow-up email. We found no public information on a wallboard, live monitoring, per-agent statistics or a native power dialer; predictive dialers appear only as systems the SIP trunk connects to. 3 18 19 20
The Data Protection Officer
Unlimited queues with skill-based routing, waiting announcements and music on hold are included in the PLUS plan, and a certified-partner AI phone assistant answers calls, books appointments and emails a call summary or detailed transcript. The supervisor layer is not documented: we found no public information on agent states, wrap-up time, wallboards, live listening, or statistics and reports per agent and queue. 3 18 19 20
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
CRM integration, API & administration
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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.
The Office Manager
A browser admin portal with administrator, manager and employee roles, several locations under one central account, and SIP trunks for existing systems such as 3CX are documented, alongside an API for click-to-dial and for reading devices, numbers and call data — though support must switch the API on first. We found no public information on integrations with the common CRM and helpdesk tools, on webhooks for call events, or on single sign-on and two-factor authentication. 3 4 5 20 21
The IT Administrator
An HTTP/JSON API is documented with authentication, version and methods, covering numbers, devices, call records and click-to-dial — enough to script part of my number plan — the trunk works with PBX systems such as 3CX, and the portal offers roles and multiple locations in one central account. The API needs activation by support, and we found no public information on single sign-on, SCIM or Entra ID provisioning, two-factor authentication, webhooks of their own, or CRM integrations beyond click-to-dial from the browser. 3 4 5 20 21
The Contact Centre Lead
The trunking side is solid — SIP trunks compatible with systems such as 3CX, number blocks on a single trunk, 1 to 200 channels, an admin account with administrator, manager and employee roles, several locations in one account, and an API for click-to-dial and call-detail records that must first be unlocked by support. We found no public information on integrations with the common CRM and helpdesk tools with caller pop-ups and automatic call logging, or on single sign-on, SCIM, two-factor authentication and audit logs, so the helpdesk-connected workflow I want would rest on the AI partner's integrations alone. 3 4 5 21
The Inside Sales Lead
There is a documented HTTP/JSON API with click-to-dial from a CRM or the Chrome extension (activation by support required), a customer account with administrator, manager and employee roles, multi-site management through one central account, and well-documented SIP trunking compatible with PBX systems such as 3CX. We found no public information on a named HubSpot integration, caller pop-ups, automatic call logging into the CRM record, webhooks from the phone system itself, single sign-on or two-factor authentication. 3 4 5 21
The Data Protection Officer
A documented HTTP/JSON API — activated by support, accessed with username and password — covers dialing, device and number display and call-record retrieval, and roles of administrator, manager and employee, an LDAP phone book, Teams calling and SIP trunks compatible with systems such as 3CX are described. We found no public information on named CRM integrations with automatic call logging, single sign-on, SCIM provisioning, two-factor authentication, audit logs or bulk import. 3 4 5 19 21
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
Reliability, call security & telecoms compliance
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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.
The Office Manager
Three geo-redundant high-security data centres in Germany operated by the hosting partner plusnet, a public status page, the Bundesnetzagentur named as the supervisory authority, the carriers behind the calls named, and ISO 27001 and ISO 9001 held by that partner give us most of the reliability spine. Encryption is documented for the customer portals only; we found no public information on call-media encryption, SLA credits, toll-fraud protection or emergency calls from home offices. 6 9 10 11 12
The IT Administrator
Three geo-redundant German data centres operated by Plusnet, a public status page, the Bundesnetzagentur named as supervisory authority, connections to Telekom, Vodafone, Telefónica and BT, and the partner's ISO 27001 and ISO 9001 available on request give a solid base beyond the '100 % Ausfallsicherheit' marketing claim. We found no public information on SLA availability figures or credits, on TLS and SRTP for the calls themselves, on toll fraud protection, or on emergency calling from home offices — the points I need for a bad day and an audit. 5 6 9 10 11
The Contact Centre Lead
Three georedundant high-security data centres in Germany run by the hosting partner plusnet, a public status page that showed a real incident and its recovery, the Bundesnetzagentur named as supervisory authority, connected carriers named, ISO 27001 with the holder stated as the hosting partner, and the G.722 HD voice codec give me an audit story to start with. We found no public information on the encryption protocols for signalling and media, SLA compensation, toll-fraud protection, or emergency calling for home-office users, and I need those in writing. 3 6 9 10 11
The Inside Sales Lead
The platform runs from three geo-redundant high-security data centres in Germany hosted by partner Plusnet, a public status page shows current system availability, the Bundesnetzagentur is named as the supervisory authority, HD voice uses the G.722 codec, and ISO 9001 and ISO 27001 certifications are stated for the hosting service provider. We found no public information on TLS or SRTP for calls, on SLA credits, on emergency calling for home offices, or on toll-fraud protection. 3 6 9 10 11
The Data Protection Officer
Three geo-redundant data centres in Germany at Plusnet, a public status page, the Bundesnetzagentur named as supervisory authority, and retention rules under the TKG for customer and connection data are documented; the ISO 27001 and 9001 certificates named belong to the service provider Plusnet and are downloadable from the customer account. We found no public information on TLS/SRTP encryption of calls, on an availability figure with credits, on emergency-call handling for home offices, or on consent rules for recordings. 5 6 9 11 12 13
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
European sovereignty
panel opinion
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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.
The Office Manager
The chain we could see is German end to end: fonial GmbH in Cologne as an EnBW subsidiary, hosting on plusnet infrastructure in three German data centres, German carriers for the calls, and a privacy policy naming its processors with their locations, plus a data-processing agreement with TOMs available in the customer account. The stated ISO 27001 belongs to the hosting partner rather than fonial itself, and where the AI partner's voice platform processes calls and transcripts is not shown on the captured pages. 1 6 10 11 13 18
The IT Administrator
The contract is with fonial GmbH in Cologne, an EnBW subsidiary, hosting runs on Plusnet's three named German data centres, the privacy policy lists subprocessors with their locations (Allnet in Germany, Bunny Stream in Slovenia, PayPal in Luxembourg), and a data processing agreement with TOMs is available in the customer account, with ISO 27001 held by Plusnet stated. The AI assistant software comes from partners such as the German platform ScaleTalk; Google appears for analytics with only a Privacy Shield reference as the safeguard. 6 10 11 13 18
The Contact Centre Lead
The chain is documented and European: fonial GmbH in Cologne, part of the EnBW group, hosting on named German infrastructure at plusnet, and a privacy policy that names subprocessors with their locations — Allnet in Germany, BunnyWay in Slovenia, PayPal in Luxembourg. A data processing agreement with TOMs is available as a download in the customer account and certifications are stated; the voice assistant, however, is delivered by a partner platform, and we found no public information on where its models process our calls. 6 10 11 13 18
The Inside Sales Lead
The captured pages show a German contracting entity (fonial GmbH, Cologne, an EnBW subsidiary) hosting in Plusnet's German data centres, a data-processing agreement with TOMs available through the customer account, and a privacy policy naming subprocessors with their countries such as Allnet in Germany, BunnyWay in Slovenia and PayPal in Luxembourg. The independently run sovereignty checks mark the contracting entity and data-processing agreement as unconfirmed, Google runs as a non-EU provider for website analytics, and the AI chain is described as certified German partners without a full subprocessor list, so I stop short of the top band. 6 10 11 13 18
The Data Protection Officer
The chain reads European: fonial GmbH in Cologne, an EnBW subsidiary, hosts in three German Plusnet data centres, the privacy policy names subprocessors with their locations (Allnet in Germany, Bunny Stream in Slovenia, PayPal in Luxembourg), and a data processing agreement with TOMs is downloadable in the customer account, with a processing agreement in place with Plusnet. What I cannot verify before patient calls are processed: the AI phone software comes from certified partners such as ScaleTalk with no statement of which model writes the transcripts or where, and the ISO 27001 is Plusnet's, not fonial's own. 6 10 11 13 18
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
Pricing transparency
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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.
The Office Manager
For our purposes the bill is computable from public pages: 3,90 € netto (4,64 € inkl. MwSt.) per activated number per month with over 100 functions included, 0,00 € set-up, free porting, a Festnetz-Flatrate at 4,00 € and an All-Net-Flatrate at 9,90 € per number, per-minute prices of 1,0 ct netto for German landline and 10 ct netto for German mobile calls, the Microsoft Teams option at 9,90 € per account, monthly cancellation with one month's notice, and a downloadable total price list plus a price calculator. We found no public prices for desk phones or for the optional set-up service. 7 8 12 16
The IT Administrator
Almost everything is computable from the public pages: 3,90 € netto per activated number per month (4,64 € inkl. MwSt.), monthly cancellation with one month's notice, 0,00 € setup, free porting, new numbers at 0,00 €, ten-number blocks at 20,00 € netto, per-minute landline and mobile rates, flatrates, the Teams option at 9,90 € per account, trunk tariffs with minimum revenues, and a downloadable total price list, with VAT treatment stated throughout. The gaps are small: we found no public device prices or rent, and the optional setup service and custom tariffs are quoted on request. 7 8 12 16 18
The Contact Centre Lead
I can compute our real cost from public pages: 3,90 € netto (4,64 € inkl. MwSt.) per activated number per month, flatrates from 4 € Festnetz and 9,90 € Allnet per number, per-minute prices for German landline and mobile, porting and new numbers at 0,00 €, set-up at 0,00 €, sequential numbers at 10,00 € and a 10-number block at 20,00 € netto, the Teams option at 9,90 € per Account, trunk tariffs from 0,80 € per channel — plus a price calculator, a downloadable total price list and a worked example totalling 49,40 € netto / Monat. Only the number-export terms after cancellation stay open, and international rates appear as starting prices with examples rather than a full list. 4 7 8 16
The Inside Sales Lead
Per-number pricing (3,90 € net per activated number and month), per-minute rates for landline, mobile and international calls, flatrate options, Teams and AI add-ons (ScaleTalk at 99 € per month), trunk tariffs, number blocks, zero-cost porting and set-up, one-month notice and net-plus-gross figures are all public, backed by a price calculator, a downloadable total price list and an itemised example cart at 49,40 € net per month. We found no public information on device prices or rent, which is the main gap when computing a fully loaded annual cost. 7 8 12 16 18
The Data Protection Officer
A buyer can largely compute the annual cost: 3,90 € net per activated number per month, 0,00 € setup, flat rates at 4,00 € and 9,90 € per number, minute prices for German landline and mobile and international calls from 1 ct, porting free, ten-number blocks at 20,00 € net, the Teams option at 9,90 € per account, the AI assistant at 99 € per month including 500 voice-AI minutes, monthly cancellation with one month's notice, and prices shown net and gross, backed by a downloadable complete price list and an example monthly total. Only devices remain open — the vendor states no hardware is needed, and we found no device prices. 7 8 12 16 18 19
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
European sovereignty — proven facts
0 of 6 dimensions provenBuilt only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.
| Legal entity | Not determined ⚠ unverified | — | uncited Report an error |
|---|---|---|---|
| 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
- Evidence ages. The oldest capture behind this page is from 5 Nov 2026. Vendors change pricing and policies without notice; every fact reflects its source as of the capture date shown in the registry.
- Weak sourcing — Data processing agreement, Hosting location, Legal entity. Not confirmed on the vendor’s own pages as captured.
- AI can misread a source. Extraction and judgement are automated; a citation guarantees traceability, not infallibility. If something here is wrong, say so — no account needed, every report is decided within 5 business days, and accepted corrections are published.
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.
- 6 legal facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
- 5 product facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
- 4 subprocessors facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
- 3 pricing facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
- 1 compliance fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. Know more? Tell us
- 3 sovereignty dimensions could not be confirmed on the vendor’s own pages and are shown as unknown. Know more? Tell us
Sources (23)
The pages every claim on this page was read from — each one checked, dated, and kept verifiable.
- 1 Vendor homepage www.fonial.de Checked 5 Nov 2026 Details →
- 2 Features page (cloud PBX) www.fonial.de Checked 5 Nov 2026 Details →
- 3 Features page www.fonial.de Checked 5 Nov 2026 Details →
- 4 Features page (SIP trunking) www.fonial.de Checked 5 Nov 2026 Details →
- 5 API documentation www.fonial.de Checked 5 Nov 2026 Details →
- 6 Security / trust page www.fonial.de Checked 5 Nov 2026 Details →
- 7 Pricing page (cloud PBX) www.fonial.de Checked 5 Nov 2026 Details →
- 8 Pricing page (SIP trunking) www.fonial.de Checked 5 Nov 2026 Details →
- 9 Public status page www.fonial.de Checked 5 Nov 2026 Details →
- 10 About page www.fonial.de Checked 5 Nov 2026 Details →
- 11 Legal notice www.fonial.de Checked 5 Nov 2026 Details →
- 12 Terms of service www.fonial.de Checked 5 Nov 2026 Details →
- 13 Privacy policy www.fonial.de Checked 5 Nov 2026 Details →
- 14 Calling, numbers & call routing — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 15 Calling, numbers & call routing — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 16 Apps, desk phones & Microsoft Teams — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 17 Apps, desk phones & Microsoft Teams — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 18 Call centre, analytics & AI — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 19 Call centre, analytics & AI — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 20 CRM integration, API & administration — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 21 CRM integration, API & administration — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 22 Reliability, call security & telecoms compliance — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →
- 23 Reliability, call security & telecoms compliance — found from sitemap www.fonial.de Checked 5 Nov 2026 Details →