Alternatives to Avaya Cloud Office

It suits small and mid-sized sales and support teams handling customer calls across languages.

Teams suits people who need chat, meetings, calls, and screen sharing across desktop, mobile, and web.

OnSIP suits businesses that need a phone system with mobile, desktop, and browser access, custom call routing, and multiple business numbers.

The service suits businesses that handle inbound or outbound calls and want routing, call monitoring, and CRM connections.

MyOperator

MyOperator suits businesses that need calling, WhatsApp messaging, and AI agents in a shared communication platform.

Nextiva suits small companies seeking hosted business calling with messaging, meetings, and call-handling features.

Broadvoice Cloud PBX

It suits mid-market teams needing cloud calling, managed routing, multi-site administration, and desktop or mobile communications.

3CX

3CX suits organizations looking for business communications across desktop and mobile platforms, with call routing and voicemail transcription.

Zoom Phone

Zoom describes use cases for IT administration, sales, retail, manufacturing, healthcare and customer experience teams.

GoTo Connect

GoTo Connect suits small, midsized, distributed, and multi-location businesses needing cloud telephony with meetings, messaging, customer channels, or contact-center tools.

Yeastar presents the phone system for businesses of any size and its hosted UCaaS offering for service providers.

It is aimed at large organizations in complex regulatory environments that need managed communications across multiple channels.