SIP Trunking vs. VoIP: How Do They Both Work?
Discover what's behind SIP Trunking and VoIP and explore the pros and cons. Learn how they can help you save on costs. Choose the one that works for your business.
Main differences between
SIP Trunking vs. VoIP
| Parameter | SIP Trunking | VoIP |
|---|---|---|
| Type of transmitted sessions | Apart from voice, it handles multimedia sessions such as video and text. | Handles voice, video, messaging communication channels, and more. |
| Operation | Can operate over the internet, also working with special types of networks VPN. | Can operate over the internet, also working with special types of networks VPN. |
| Call traffic | Designed to manage large amounts of traffic and data. You can also add an extra layer of security by getting a direct connection to your provider. | Handles traffic from a central network, where a provider oversees everything. This is perfect for businesses that do not have the experience or time to manage their own systems. |
| Equipment | SIP-Compatible Phones or other internet-enabled devices, an internet connection. | SIP-Compatible Phones or other internet-enabled devices, an internet connection. |
| Best for | Companies that already have an IP PBX system or UCaaS communication tools without voice. | Companies without an IP PBX that want additional phone-system features, like routing and queuing. |
| Worst for | Small businesses with minimal call volume, businesses with unreliable internet connectivity, highly regulated industries with serious compliance requirements, businesses heavily dependent on legacy systems. | Companies requiring a high level of security, large-scale call centers, privacy-sensitive services, and businesses with limited budgets for development and maintenance. |
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Pros and Cons of SIP Trunking and VoIP
Features
Discover 4 most popular
VoIP features
Call Flow Designer
Design your inbound calling journey to fit the unique needs of your business and customers' expectations.
Read more about Call Flow DesignerAnalytics
Get a 360° view of everything happening within your team and unprecedented control over your performance.
Read more about AnalyticsCall Transcriptions
Transcribe calls instantly with an AI technology and save your team time, resources and administrative work.
Read more about Call TranscriptionsInternational numbers
Expand your business to new markets and reach customers all around the world with over 160 international numbers.
Read more about International numbersWhat real users are saying
The inside scoop from actual CloudTalk customers.
From 20-Minute Waits to 3-Minute Service
“With CloudTalk, we dropped our missed calls from 80% to 16% and cut wait times by over 85%, while scaling from 2 to 20+ agents.”
40% Lift in Call Connections
“With CloudTalk, our pre-sales team stopped wasting time on dropped calls and started having more of the right ones.”
20% More Efficient Call Handling
“We replaced personal phones and manual processes with a scalable VoIP solution and saw a 20% jump in team productivity.”

40% Fewer Missed Calls
“We replaced personal phones and manual processes with a scalable VoIP solution and saw a 20% jump in team productivity.”

From 3 Phone Systems to One Source of Truth
“Before CloudTalk, our data was scattered. Now, everything lives in HubSpot — connected, visible, and fully unified.”

66% More Capacity Without Hiring
“CloudTalk made it easy to scale support fast: we cut handle time by 33% and now handle 66% more calls per agent.”
CloudTalk is a data-driven solution for exceptional customer experience and intelligence is a key part of it.
Schedule a demo today and find out for yourself.
Frequently asked questions
SIP Trunking and VoIP are related yet distinct technologies. VoIP (Voice over Internet Protocol) refers to the broader concept of transmitting voice over the internet, while SIP (Session Initiation Protocol) Trunking is a specific method within VoIP that facilitates the connection between a business phone system and the public telephone network.
Yes, if your business aims for seamless integration with the traditional phone network while leveraging the benefits of VoIP, a SIP trunk is essential. It acts as the gateway, facilitating communication between your VoIP system and external telephone lines.
A SIP server and a VoIP server serve distinct functions in the realm of communication technology. A SIP server specifically handles the initiation, modification, and termination of SIP sessions. A VoIP server is a broader term encompassing various protocols and technologies facilitating voice communication over the internet.
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