As of 6 Nov 2026, the panel rates Aircall 3/5 and RingCentral RingEX 3/5 in Cloud Telephony (VoIP & Cloud PBX). Weighted by what each judge cares about, 1 of the 6 judges picks Aircall and 5 pick RingCentral RingEX. Aircall scores higher on 1 of 6 criteria (European sovereignty). RingCentral RingEX scores higher on 5 of 6 criteria (Apps, desk phones & Microsoft Teams, Calling, numbers & call routing, Reliability, call security & telecoms compliance, plus 2 more). Provenance — Aircall: EU-Made; RingCentral RingEX: Rest of world. Ratings are the AI panel’s opinion, formed from public evidence: how scores are made.
RingCentral RingEX takes the technical rows: six judges lean its way on calling and routing (7.0 to 5.8), apps and devices (5.8 to 4.2) and network and compliance (7.0 to 6.0), with integration and administration close (7.0 to 6.8; one lean, five ties); the contact centre splits the bench, 3 leans to RingEX and 3 ties (8.0 to 7.5). Aircall takes sovereignty 6.5 to 3.8, six judges leaning its way; its verdict credits a published processing agreement, CNIL supervision and per-country subprocessor list and weighs a US voice and transcription chain, and RingEX's privacy notice states EEA and UK data may be transferred to and stored on servers in the United States and Switzerland. Pricing transparency: Aircall 5.7 to 4.3, five leans, one tie; RingCentral publishes no prices. Five judges' totals favour RingEX, IT administrators 6.5 to 5.4; the data-protection officer takes Aircall, 6.4 to 6.2. No overall winner emerges.
Choose Aircall if
You need a published processing agreement, CNIL supervision and a per-country subprocessor list on file — the credits behind Aircall's sovereignty lean, 6.5 to 3.8 with six judges leaning its way.
Your compliance policy rules out a privacy notice stating that EEA and UK data may be transferred to and stored on servers in the United States and Switzerland — the finding beneath RingEX's sovereignty mean of 3.8.
You need licence prices in the open for budget sign-off — Aircall publishes licence prices and takes pricing transparency 5.7 to 4.3 (five leans, one tie); number and porting prices are not public.
You are buying under a data-protection mandate — the data-protection officer is the judge whose weighted total favours Aircall, 6.4 to 6.2.
Choose RingCentral RingEX if
You need desk phones and device provisioning — apps and devices goes RingEX 5.8 to 4.2 with six judges leaning its way, and Aircall's verdict found no public information on desk phones from named makers, DECT handsets or automatic provisioning.
Your calling and routing setup is the priority — six judges lean RingEX, 7.0 to 5.8.
You need the higher network and compliance score — six judges lean RingEX, 7.0 to 6.0.
You run outbound campaigns — the contact centre goes RingEX 8.0 to 7.5 (3 leans, 3 ties), with judges citing preview, progressive, predictive and voice-broadcast dialers and listen-whisper-barge supervision.
Your IT administrators and office managers hold the budget — their weighted totals favour RingEX, 6.5 to 5.4 and 6.3 to 6.0.
Read this comparison as one judge. Each weighs the same scores by what they care about.
The Data Protection Officer
External data protection officer for a group of six medical practices whose patients call about appointments, results and prescriptions. Knows that call records fall under the secrecy of telecommunications and that a recorded or transcribed call can hold health data. Reads the subprocessor list, asks which AI model writes the transcripts and where, wants encryption on by default, and needs a DPA and a retention period before any call is recorded.
Aircall
This judge's pick
RingCentral RingEX
Criterion by criterion
Calling, numbers & call routing
Aircall
Numbers in over 100 countries including local, toll-free and mobile, porting of existing numbers handled by the vendor's team, IVR menus, queues, ring groups grouped by location, language or skill, time-based routing with per-number schedules, voicemail, three-digit extensions and call recording with pause are all documented. We found no public information on emergency calls with caller location, fax, number blocks or porting timelines, which a practice that must reach 112 should ask about before signing.
RingCentral RingEX
Number porting is free with a seven-to-fourteen business day window, and the documented set covers the drag-and-drop IVR editor, queues, business-hours, after-hours and holiday answering rules, forwarding with warm transfer, voicemail-to-email transcription, fax on a single number and configurable outbound caller ID. Emergency calling is documented country by country with a registered address per line and location transmission to the emergency centre — exactly the detail I need when patients call a practice about results or prescriptions. We found no public information on recording consent announcements, number blocks, call park or busy lamp fields.
Apps, desk phones & Microsoft Teams
Aircall
Desktop, browser and iOS/Android apps are documented, business calls run on the private mobile without exposing the private number, calls can be handed to the GSM network when the connection degrades, and a Microsoft Teams integration with presence sync and calling from Teams is listed on the AppSource marketplace. We found no public information on desk or DECT phones from named makers with automatic provisioning, on devices for sale or rent, or on Teams Direct Routing or Operator Connect certification.
RingCentral RingEX
Desktop, mobile and browser apps, real-time colleague availability and device switching are documented, and the Teams story is strong: embedded app or Direct Routing, cloud telephony without a Teams Phone licence and a Microsoft-certified contact centre inside Teams. Desk phones appear through a manual Yealink provisioning guide and a bring-your-own-device option, with hardware sales terms listed in the legal library. We found no public information on DECT handsets, device rental or fixed-mobile convergence with a SIM.
Call centre, analytics & AI
Aircall
Queues with callback out of the waiting line, call whispering, a power dialer, live and historical dashboards with per-agent statistics, missed-call lists assignable from the mobile, recording for coaching, AI transcription and summaries, and an AI receptionist speaking 38 languages are documented, with SMS and WhatsApp beside calls. We found no public information on listen and barge monitoring, sentiment analysis, wrap-up time or scheduled exportable reports. I note that the AI pages state customer data is never used to train models — a precondition before any machine transcribes patient calls.
RingCentral RingEX
Skills-based, priority and further routing methods, listen-whisper-barge, preview through predictive and voice-broadcast dialers, over 250 prebuilt reports with real-time dashboards, AI transcription and summaries, sentiment, quality scoring across every interaction, workforce management and an AI receptionist with SMS beside voice are all documented. For a practice group those transcripts are health data, and here the pages say only that industry-recognized large language models are used and defer to a subprocessor list; we found no public information naming the model provider, the transcription languages or an opt-out.
CRM integration, API & administration
Aircall
Over 250 native integrations including HubSpot, Salesforce, Zendesk and Pipedrive, CTI screen pops, automatic logging of calls, recordings, comments and tags into the CRM, a documented REST API and webhooks covering calls, contacts, users, numbers and call journeys, user roles, two-factor authentication and SAML single sign-on with SCIM on the Enterprise plan are documented, alongside a partner program with developer sandboxes. We found no public information on audit logs, bulk user import, multi-site account structures or SIP trunking into an existing PBX.
RingCentral RingEX
Caller pop-ups and automatic call logging are documented for Salesforce and Zoho, SCIM provisioning is documented endpoint by endpoint, and single sign-on with enforced multi-factor authentication, custom roles, multi-site management, an audit trail and SDKs in eleven languages are described. Bulk user creation is capped at twenty-five users per batch in the instructions we read. We found no public information on SIP trunks for an existing PBX by name or on partner accounts with sub-customers.
Reliability, call security & telecoms compliance
Aircall
A public status page with component-level uptime over 90 days, a stated 99.95% availability, TLS and SRTP for voice with AES-256 at rest on AWS, SOC 2 Type 2 with a committed annual audit, regular third-party penetration tests, 24-hour breach notification by email, and acknowledgment of obligations as a telecommunications service provider are documented. We found no public information on an SLA with credits, emergency calls from home offices or toll-fraud spending limits, and the retention of recordings is described only as whatever is agreed by pricing plan — no practice should let patients be recorded on that basis.
RingCentral RingEX
The compliance pages list ISO 27001, 27017, 27018 and 22301, SOC 2 and SOC 3, HITRUST, Cyber Essentials Plus and a C5 attestation for RingEX in German and English, alongside TLS and SRTP, STIR/SHAKEN and an unusually honest emergency calling policy with its limitations spelled out. Three things are missing for my audit file: an SLA with credits, any stated retention period for call recordings, and the desk-phone instructions show secure voice transport can be set to No and fall back to TCP or UDP. We found no public information on registration with the Bundesnetzagentur or on the secrecy of telecommunications.
European sovereignty
Aircall
The contracting entity is Aircall SAS in Paris, a data processing agreement is published with EU standard contractual clauses and the CNIL named as supervisory authority, a data protection officer is registered, transcripts and recordings are stated to be stored in the EU from day one, and the subprocessor list with locations is public. That list shows voice transmission through Twilio in the USA, transcription of call recordings through Deepgram and AssemblyAI in the USA and AI voice inputs through ElevenLabs and Cartesia in the USA, while the privacy policy names the United States, Australia and India among the storage and transfer locations. For recordings that can carry health data, the call and transcription chain runs through US providers under contractual clauses, so the evidence sits between an EU-anchored offer and a fully sovereign one.
RingCentral RingEX
German customers contract with RingCentral Germany GmbH in Hamburg under German law before the Munich I District Court, a data processing agreement with standard contractual clauses is published, and a data protection officer is reachable in Dublin. But the privacy notice states that data collected in the EEA and UK can be transferred to servers in the United States and Switzerland, the subprocessor list is referenced only as a link whose contents the captured pages do not show, and the models behind AI transcription are named only as industry-recognized large language models. As the practices' data protection officer I cannot establish from these pages where recordings and transcripts are stored or which AI model writes them.
Pricing transparency
Aircall
Plans are public at 30 € pro Lizenz/Monat for Essentials and 50 € pro Lizenz/Monat for Professional with an individual Enterprise tariff, a minimum of three licences, annual contracts with monthly invoicing and a 25% annual discount; add-ons are priced, among them AI Assist Pro at 49 € pro Lizenz/Monat, Analytics+ at 15 € pro Lizenz/Monat, WhatsApp at 10 € pro Lizenz/Monat and AI voice agent packages from 210 €/Monat to 1.600 €/Monat or 0,25 €/Min. pay as you go. We found no public prices for the numbers themselves, porting, calls beyond the stated inclusions, set-up fees or VAT treatment, so the real annual cost of a practice's numbers and minutes cannot be computed from the public pages alone.
RingCentral RingEX
A starting price of "ab nur 65 $ pro Benutzer:in" with unlimited minutes is public on the contact-centre page, the plan tiers are shown with included minutes from one hundred to two thousand per user, porting is stated as free, prices are exclusive of taxes and a Germany outbound call rate document exists in the legal library. We found no public information on the per-plan prices in euros, device or set-up prices, or number block costs, so the annual cost for a practice group is not computable from what we read.
Sovereignty, side by side
Dimension
Aircall
RingCentral RingEX
Legal entity
Not determined
Not determined
Hosting location
Not determined
Not determined
Hosting options
Not determined
Not determined
Open source
Not determined
Not determined
Data processing agreement
Not determined
Not determined
Transfer impact assessment
Not determined
Not determined
Facts, side by side
Only facts both products carry under the same definition — anything else would not be a fair row.
As of 6 Nov 2026, the panel rates both 3/5. Weighted by what each judge cares about, 1 of the 6 judges picks Aircall and 5 pick RingCentral RingEX. Which one fits depends on the criteria that matter to you; the table on this page shows both side by side, and each judge’s reading has its own page. Both were scored by the same AI bench under the same rubric, from public evidence only, as the methodology describes.
Is Aircall or RingCentral RingEX European?
Aircall is European (EU-Made). RingCentral RingEX is not European by provenance (Rest of world). Provenance is read from each company’s own legal pages: who builds it and who owns it.