Voice over Internet Protocol (VoIP)

• VoIP replaces traditional landlines by transmitting voice as digital data over the internet. 

• Lower costs and easy scalability make VoIP ideal for businesses of all sizes. 

• Advanced features like video calls, call recording, and unified communications boost productivity. 

• Microsoft Teams Phone provides VoIP calls with quick setup and flexible device options. 

• Perfect for remote and hybrid work, VoIP supports reliable, mobile-friendly connectivity.

Voice over Internet Protocol (VoIP), also called IP telephony, is a technology that enables phone calls over an internet connection instead of a traditional landline. It works by converting voice signals into digital data packets.

VoIP services offer key advantages for businesses and individuals, including:
 

• Lower costs compared to traditional phone systems.
• Greater flexibility for remote and hybrid work.
• Streamlined communications across devices and locations.
• Advanced features such as video conferencing and unified communications.

Microsoft Teams Phone supports VoIP calls to anyone—whether they’re on a landline, a mobile phone, or using the Teams app.

Start making VoIP calls from Teams Phone to anyone using Teams—no setup required. Learn how

Make calls from Teams Phone with or without a connection to the public switched telephone network (PSTN). Learn how

Turn on your video to talk face-to-face with one person or a group no matter where you are. Learn how

If you prefer to keep using the traditional phone network, Teams Phone can connect through that too. Learn how

VoIP works by converting your voice into digital data and transmitting it over the internet instead of a traditional phone network. The process starts by capturing your voice through a microphone, converting it into digital packets, and sending those packets across the network. At the recipient’s end, the packets are reassembled and converted back into audio. This technology supports voice calls and video calling, messaging, conferencing, and integration with cloud apps such as Microsoft Teams.

VoIP calling features deliver all the capabilities of an enterprise phone system, including call routing, screen sharing, call recording, and call queuing—to help businesses stay connected and improve communication efficiency.

Call management
Use AI-powered features like automatic call routing based on time, location, and availability.

Screen sharing
Share your screen during a call for better collaboration and productivity.

Call recording
Record a voice or video call for later reference so you can focus on the conversation instead of taking notes.

Cloud voicemail
Access and listen to your messages anywhere, anytime, on any device.

Call queues
Set up greetings, hold messages and music, and voicemail to manage incoming calls professionally.

Device compatibility
Using Teams for VoIP calls means you can choose from a wide range of devices such as headsets and speakerphones—with flexible payment options.

Using VoIP in Teams delivers cost savings, flexibility, and advanced features such as video, messaging, and unified communications. Sign in to Teams.

Cost savings 
Eliminate long-distance and international call charges—an internet connection is all that’s required. Compare plans and pricing.

Remote and hybrid work connectivity 
Collaborate face-to-face from any location using VoIP to make video and conference calls.

All-in-one solution 
Stay focused and in the flow of work with an all-in-one solution for calling, chat, meetings, and collaboration.

Device flexibility 
Choose from a variety of devices for every situation—such as headsets and speakerphones—with flexible financing options.

Quick setup and management 
Easily add, monitor, and manage voice and video calling from the Teams admin center.

Reliable, flexible, mobile calling 
Make high-quality voice and video calls from any location, at any time, since VoIP calling is as reliable as your internet connection.

Easy scalability 
Scale your VoIP phone systems up or down as your business evolves—without adding or removing physical lines.

A small business VoIP phone system offers a modern, cost-effective way to stay connected and competitive. Key benefits include:

Lower operational costs 
Avoid expensive landlines and reduce long-distance or international calling fees. Pay only for the extensions and features you need.

Remote work flexibility 
Make and receive calls from laptops, smartphones, or tablets—ideal for working from home, client sites, or coworking spaces without missing important calls.

Easy scalability 
Add new team members or departments without extra hardware or complex installations. Perfect for growing businesses or seasonal staffing needs.

Professional appearance 
Present a polished, larger-business image to clients with custom greetings, call routing, and voicemail-to-email.

Business continuity 
Ensures calls continue during power outages or internet disruptions with cloud-based VoIP, connecting through mobile devices or alternate locations.

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