Zoom Phone is a cloud-based phone system built for the way modern teams work — AI-powered calling, enterprise-grade reliability, and seamless integration with the Zoom platform you already use. No hardware. No complex setup. No hidden costs.
Not all cloud phone systems are built the same. These are the capabilities that matter most when comparing providers:
Migrating from a legacy phone system to a cloud phone system is more straightforward than most IT teams expect. Here is how the process typically works:
A cloud phone system is a business communication platform that routes calls over the internet using VoIP (Voice over Internet Protocol) technology, replacing traditional on-site PBX hardware. It gives businesses a dedicated business phone number, call routing, voicemail, and calling capabilities — managed through software and accessible from desktop computers, mobile phones, and desk phones from any location. Unlike legacy phone systems, cloud phone systems require no on-site servers and can be deployed and managed without specialized telephony expertise.
VoIP is the underlying technology that transmits voice calls as digital data over an IP network. A cloud phone system is the complete business product built on top of VoIP — including call routing, auto attendant, voicemail, call recording, analytics, user management, and AI features. Every cloud phone system uses VoIP, but VoIP alone is not a complete phone system. When comparing phone systems, "cloud phone system," "VoIP business phone system," and "cloud-hosted PBX" all refer to the same category of product.
Cloud phone system pricing varies by provider and plan tier. Most providers offer tiered options ranging from a basic metered calling plan to unlimited calling plans with advanced features. When comparing total cost across providers, factor in whether AI features, SMS messaging, 911 service, and compliance features are included in the subscription — these vary significantly by provider and materially affect total cost of ownership. See Zoom Phone plans and pricing.
Switching from a traditional PBX to a cloud phone system involves five steps: (1) assess your current users, locations, and call requirements; (2) choose a provider and plan; (3) port your existing business phone numbers — Zoom Phone supports number porting at no charge; (4) configure call routing, auto attendant, and user profiles through the admin portal; and (5) deploy the desktop or mobile app to users and go live. Most teams complete the full migration and are live within one to a few business days, depending on number porting timelines.
Yes. Cloud phone systems are specifically designed to support remote and hybrid workforces. Because calls route over the internet, employees can make and receive calls on their business number from any device — desktop or mobile app, or certified desk phone — regardless of where they are working. Call routing rules, coverage hours, and forwarding preferences are configured centrally and applied globally, so customers can reach the right person regardless of that person's physical location.
Coverage varies by provider. Zoom Phone provides native PSTN connectivity in 49+ countries and territories. For businesses with existing carrier contracts in additional regions, Zoom Phone's Bring Your Own Carrier (BYOC) option extends coverage using current carrier relationships. This combination of native PSTN and BYOC gives businesses the flexibility to operate globally without maintaining multiple regional phone systems.
Modern cloud phone systems include enterprise-grade security controls: encrypted call signaling and media, role-based access controls, audit logs, and compliance features such as E911 support, HIPAA-ready configuration options, and call recording retention policies. When evaluating providers, look for documented security certifications (SOC 2, ISO 27001), data residency options for regulated industries, and built-in E911 support without an additional fee.
Yes. Number porting transfers your existing business phone numbers to the new provider. Zoom Phone supports number porting of compatible business phone numbers at no charge. The process typically takes a few business days; your existing service continues to operate throughout the porting window, so there is no gap in coverage. During setup, you can also obtain new local or toll-free numbers if needed.
AI capabilities in cloud phone systems typically include automatic call transcription, post-call summaries, and voicemail transcription. Zoom Phone includes AI-generated call summaries, voicemail prioritization, and task extraction from voicemail — all included in Zoom Phone plans at no additional cost. For businesses that need 24/7 AI-driven call handling, Zoom's Virtual Agent AI Receptionist is available as an add-on and can answer calls, book appointments, and route inquiries automatically.
Integration depth varies by provider. Zoom Phone integrates with Salesforce, HubSpot, Microsoft Teams, and thousands of third-party apps through the Zoom App Marketplace. CRM integrations enable automatic call logging, screen pops with caller context, and click-to-dial from within the CRM interface. Microsoft Teams integration allows Teams users to make and receive Zoom Phone calls directly from the Teams interface without switching applications.
Zoom Phone gives your team enterprise-grade cloud calling with AI built in
— deployed in hours, managed from one place, on every device.
