3CX vs Avaya Cloud Office

3CX9.3Visit AOAvaya Cloud Office9.1Visit

Higher score 3CX #2 in Cloud PBX Software 9.3/10 Free plan Free plan✓ 1 of 3 features Visit 3CX

vs

AO Avaya Cloud Office #4 in Cloud PBX Software 9.1/10 Paid ✓ 1 of 3 features Visit Avaya

• 3CX fits best

  Teams choosing between cloud and self-hosted PBX

• Avaya Cloud Office fits best

  Teams wanting PBX alongside meetings and collaboration

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Side by side

Feature	3CX 9.3/10 Visit ↗	AOAvaya Cloud Office 9.1/10 Visit ↗
At a glance
Editor score	9.3	9.1
Ranking	#2 in Cloud PBX Software	#4 in Cloud PBX Software
Best for	Teams choosing between cloud and self-hosted PBX	Teams wanting PBX alongside meetings and collaboration
Pricing model	Free plan + paid	Paid
Starting price	$300/yr	—
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Cloud, Self-hosted, Desktop, Mobile	Cloud, Desktop, Mobile
Platforms	Web, Windows, macOS, Linux, iOS, Android	Web, Windows, macOS, iOS, Android
Support	Community, Docs	Docs · 24/7
Integrations	10 integrations	300+ integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features 3CX 1/3 · Avaya Cloud Office 1/3
Auto attendant	✓	✓
Call recording	Not checked yet	Not checked yet
Call queues	Not checked yet	Not checked yet
Specs
Number types	Not checked yet	Not checked yet
Supported endpoints	Not checked yet	Not checked yet
Extensions included	Not checked yet	Not checked yet
Our review
Pros	Cloud and self-hosted deployment options Visual call-flow tools, queues, and call routing Web, desktop, mobile, CRM, and messaging support	Auto-Receptionist, call groups, and customizable call handling Messaging, file sharing, conferencing, and video meetings in one service Desktop and mobile apps plus 300+ business integrations
Cons	Free plan is limited to 4 simultaneous calls Paid Basic plan is capped at 8 simultaneous calls Pro and AI plan prices are not specified here	Plan features vary substantially, so buyers must match tier to needs Advanced controls such as recording and SSO start at Premium Designed as a broad communications suite, not voice-only PBX
Our verdict	3CX is a business communications platform centered on an IP phone system, aimed at organizations that want calling, messaging, and contact-center functions in one system. It supports cloud and self-hosted deployments, with web, Windows,… Read the review →	Avaya Cloud Office brings business calling, messaging, file sharing, video meetings, and conferencing into one cloud communications service. It suits organizations with office, remote, or mobile workers that want PBX capabilities alongside… Read the review →

Strengths and trade-offs

• 3CX — where it wins

  • Cloud and self-hosted deployment options
  • Visual call-flow tools, queues, and call routing
  • Web, desktop, mobile, CRM, and messaging support

  Where it doesn't

  • Free plan is limited to 4 simultaneous calls
  • Paid Basic plan is capped at 8 simultaneous calls
  • Pro and AI plan prices are not specified here

• Avaya Cloud Office — where it wins

  • Auto-Receptionist, call groups, and customizable call handling
  • Messaging, file sharing, conferencing, and video meetings in one service
  • Desktop and mobile apps plus 300+ business integrations

  Where it doesn't

  • Plan features vary substantially, so buyers must match tier to needs
  • Advanced controls such as recording and SSO start at Premium
  • Designed as a broad communications suite, not voice-only PBX

• 3CX9.3/10 · Free plan

  Flexible PBX deployment with visual call flows, messaging, and CRM integrations.

  Visit 3CXFull verdict →
• AOAvaya Cloud Office9.1/10 · Paid

  A multi-tier cloud PBX that combines business calling with messaging and meetings.

  Visit AvayaFull verdict →