1
Best for Business
RingCentral
The most complete unified communications platform.
- Reliable call quality
- Voice, video and messaging
- Deep integrations
- 99.999% uptime SLA
9.7
Outstanding VoIP Providers
Beste Business-VoIP-Anbieter 2026
We tested the leading business phone systems for call quality, integrations and admin tools — these are the best for teams of every size.
Selbst getestet Keine gekauften Platzierungen Aktualisiert June 10, 2026
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RingCentral
- 2
Nextiva
Strong reliability with standout customer support.
- Excellent support
- Reliable and easy to use
- Good analytics
- Solid value
9.5Excellent - 3
Dialpad
Modern, AI-assisted calling with live transcription.
- Live AI transcription and notes
- Clean, modern apps
- Affordable entry plan
- Good for sales teams
9.2Excellent - 4
8x8
Great for teams that call internationally.
- Unlimited calling to many countries
- Voice, video and chat
- Good compliance options
- Reliable global network
9.0Excellent - 5
Ooma
Straightforward, affordable phone service for small businesses.
- Easy setup
- Affordable
- Good core calling features
- Virtual receptionist
8.8Very Good
Alle Anbieter im Überblick
| # | Anbieter | Bewertung | Am besten für | Video meetings | Preis | |
|---|---|---|---|---|---|---|
| 1 | RingCentral | 9.7/10 | Best Business VoIP Overall | Up to 200 people | 20,00 $ | Get Quote |
| 2 | Nextiva | 9.5/10 | Best Support & Onboarding | Yes | 20,00 $ | Get Quote |
| 3 | Dialpad | 9.2/10 | Best AI Features | Yes + AI notes | 15,00 $ | Try Free |
| 4 | 8x8 | 9.0/10 | Best for Global Teams | Yes | 24,00 $ | Get Quote |
| 5 | Ooma | 8.8/10 | Best for Small Offices | Yes (Pro Plus) | 19,95 $ | Zum Angebot |
A business phone system has a different job to a home line: routing calls to the right person, recording for compliance, plugging into your CRM and scaling from 2 seats to 200 without a forklift upgrade. We provisioned real accounts with each provider and tested setup, call quality, admin tools and integrations.
How we rate VoIP providers
- Reliability (30%) — call quality and uptime.
- Features (30%) — voice, video, SMS, integrations.
- Support (20%) — onboarding and help.
- Value (20%) — per-user pricing.
What separates business VoIP from consumer VoIP
Auto-attendants, ring groups, call queues, recording, analytics and SLAs. Consumer services (see our residential VoIP picks) skip these to hit a lower price — fine at home, limiting for a team.
How to choose
Match the tier to the features you will actually use: most small teams need an auto-attendant, mobile apps and basic analytics — usually the mid tier. Check CRM integrations on the exact plan you are buying: vendors often gate them to higher tiers.
Pricing reality check
Advertised per-user prices usually require annual billing and the largest seat counts. Budget for the monthly price on your real team size, and confirm number porting is free before you commit.
Häufige Fragen
What does business VoIP cost?
Typically €10–€30 per user per month depending on tier and contract length. Advertised prices usually assume annual billing and high seat counts, so quote your real team size.
Can I keep my existing business number?
Yes — all providers here support number porting, and most port your main numbers free. Plan a small overlap period so calls are never missed during the switch.
Do I need special hardware?
No. Every provider works through desktop and mobile apps. Desk phones are optional and can usually be bought or rented through the provider if your team prefers handsets.
Which integrations matter most?
CRM screen-pop and call logging (Salesforce, HubSpot), helpdesk integrations, and calendar presence. Check your must-have integrations are included in the tier you are buying, not just the top one.
Unser Testsieger: RingCentral
9.7
Get Quote
Ausführliche Testberichte zu allen Empfehlungen
- RingCentral 9.7/10 The most complete unified communications platform.
- Nextiva 9.5/10 Strong reliability with standout customer support.
- Dialpad 9.2/10 Modern, AI-assisted calling with live transcription.
- 8x8 9.0/10 Great for teams that call internationally.
- Ooma 8.8/10 Straightforward, affordable phone service for small businesses.
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Womit wir Geld verdienen: Wenn Sie über einen Link auf dieser Seite einen Vertrag abschließen, zahlt uns das Unternehmen unter Umständen eine Vermittlungsprovision. Die Reihenfolge wird davon nie beeinflusst. Entscheidend sind allein unsere Tests, und jedes Produkt wird nach denselben Kriterien bewertet, ob es uns bezahlt oder nicht.