Top List Of SIP Trunk Providers In 2025 (Reviewed & Ranked)
Published On November 21st, 2024 Communication
“Streamline your business communication with this best list of SIP trunk providers.”
Tired of paying hefty phone bills? And completely exhausted seeing wires all around your office? Then it is high time you discover the real benefit of SIP trunking for businesses of all sizes and opt for it.
SIP Trunking comes as a beneficiary option for enterprises because it saves cost by using internet-based connections, offers the required scalability, and the most needed features in a contact center studio – call forwarding and voicemail-to-email.
So what do you say? Ready to bid goodbye to the traditional phone calls? If yes, then this blog is for you as we’ll discuss the world’s best SIP trunk providers for efficient business communication.
Table of Contents
What is an SIP trunk?
SIP trunk or Session Initiation Protocol trunk is a VoIP technology that allows businesses to make and receive phone calls over the internet besides the traditional phone lines.
To be precise, an SIP trunk scales communication infrastructure and bridges a business’s phone system with PSTN for carrying out efficient agent-customer interactions.
Why should we go with SIP trunking?
SIP trunking offers plenty of benefits for businesses when it comes to modern communication, like:
- Scalable voice: Imagine your business grows and you are still using traditional phone lines, then it will be cumbersome for you to increase the number of connections. And that’s why using SIP allows you to easily scale up or down your phone lines based on demand.
Pro Tip: Want to learn how to build a scalable messaging app for your business?
- Cloud redundancy: When a SIP trunk is deployed onto the cloud, you can save your data during a server disruption or a malfunction. Because, a defect in one data center will not affect the communication process, and the traffic will be routed to another location.
- Flexible pricing: You can see that the SIP trunking providers offer varied pricing models based on features and usage patterns, thus giving you the flexibility to pay only for what you use.
So, with these benefits, we can conclude that SIP trunking is a cost-effective option for businesses.
How does SIP trunking compare to business VoIP?
Here, you can explore the real differences between SIP trunking and business VoIP in terms of features, call logging, and scalability.
| Attributes | SIP Trunk | Business VoIP |
|---|---|---|
| Scalability | Highly scalable | Scalable |
| Set up | Tech expert required | Simple to set up |
| Phone lines | Not required | May include phone lines |
| National calls | Yes | Yes |
| Call logs | Yes | Yes |
| Features | Limited | Abundant |
| Video conferencing | Not possible | Possible |
So these were some of the prime differences between the two. And as a business, you can opt for either SIP/VoIP solution based on your communication infrastructure.
Best 10 SIP Trunking Providers Of 2025
Below are some of the versatile SIP trunk providers that offer cutting-edge solutions for efficient communication.
1. Unitel SIP
Unitel SIP comes as an ideal choice for businesses who are looking for a scalable SIP trunking solution. Though it is suitable for businesses of all sizes, its flexibility and modern features are what make it a hit in the market.
And when it comes to efficiency it excels in building the best communication infrastructure.
- Features: Advanced call routing, call forwarding, scalability, failover modes, video conferencing, instant messaging
- Tech stacks: SIP protocol, PBX compatibility
- Locations: National and international levels
- Pricing: Starts from $12.99 per month
- Industries: SMBs, enterprises
2. Bandwidth
Bandwidth’s robust voice APIs are known to cover nationwide calls and reliable SIP trunking services. Both its quality and support are top-notch and aid in integrating with multiple third-party apps.
- Features: APIs, access controls, call conferencing, activity dashboard, call center management.
- Tech stacks: REST API, HTML5, jQuery, SIP protocol
- Locations: National and international levels
- Pricing: Free and one-time license fee
- Industries: SaaS businesses, advertising, technology, media and marketing
3. Digium
Primarily designed for Asterisk-based phone systems, Digium now specializes in SIP trunking solutions as well as integration capabilities and third-party support.
- Features: HD-voice calls, SIP trunking, call recording, call forwarding, DID, caller screening, automatic answering
- Tech stacks: SIP protocol
- Locations: Across nations
- Pricing: $90 one-time license fee
- Industries: Industries that uses Asterisk-based phones
4 SIP.US
SIP.US is for those businesses who are looking for an affordable SIP solution but with extensive network coverage.
Plus, its setup is simple and makes it highly reliable and scalable when it comes to growing user volumes.
- Features: Call monitoring, call routing, call transfer, contact DB, call list management
- Tech stacks: SIP protocol, jQuery, Google Analytics, HTML5
- Locations: Across nations
- Pricing: $24.95 per month
- Industries: Cloud-based solutions, technology, visual media
5. MegaPath
MegaPath is known for its lowest latency, robust security, and best uptimes when it comes to delivering SIP trunking services.
Additionally, they offer complete customizations on their plans to deliver a scalable communication infrastructure.
- Features: Line status monitoring, call rejection, lamp field, alerts, call queuing, call blocking
- Tech stacks: SIP protocol, jQuery, Google Analytics, HTML5
- Locations: Nation-wide coverage
- Pricing: $19.95 per user per month
- Industries: Healthcare, finance, networking, inventories, HR
6. MirrorFly
MirrorFly’s in-app communication SDKs are a hit in the market that also offers enterprise-grade SIP trunking solutions that focus on delivering smoother real-time communication.
Their APIs are scalable and customizable, and support businesses of all sizes. Plus, they also help set up call center solutions with ease.
- Features: Call forwarding, call recording, video conferencing, audio calling, 1-1 video calling, and more.
- Tech stacks: SIP protocol, WebRTC protocol, React Native, Flutter, Swift, Vue JS, Angular, React
- Locations: Across nations
- Pricing: One time license fee and Pay-as-you-go pricing models
- Industries: Telehealth, finance, banking, education, retail, dating, e-commerce, gaming
7. Vonage
Vonage offers industry-0best and scalable SIP trunking services to global audiences with affordable pricing and modern communication features.
Thus making it highly acceptable by businesses worldwide.
- Features: Call logging, call recording, call scripting, call routing, call conferencing
- Locations: Nationwide calling
- Pricing: Pay per use
- Industries: Advertising, marketing, technology, transportation, networking
8. Twilio
Twilio’s voice APIs offer SIP trunking solutions with a global coverage and pay-as-you-go pricing model. Though they promise to offer custom communication solutions to businesses, their APIs lack features that their peers offer.
Did you know? Twilio is sunsetting its programmable video APIs this year. So, migrate to a better solution like MirrorFly for uninterrupted communication services to users.
- Features: Archiving, API, video conferencing, automated attendant, escalation, retention, permission
- Locations: Across geographies
- Pricing: $0.01 per user
- Industries: Logistics, real estate, customer support, technology
9. RingCentral
RingCentral is one of the SIP trunking service providers that offer unified communication features with unmatched scalability and reliability. Also, it is regarded as the best in the market for rendering a complete communication portal.
Features: Customer support, call recording, call flip, voicemail, business SMS, IVR, hot desking, presence, ring out
Tech Stacks: SIP and cloud-based solutions
Locations: Global presence
Pricing: Free and subscriptions
Industries: IT, healthcare, energy, and more
10. Plivo
Plivo is one such provider that offers SIP trunking solutions with programmable APIs and industry-best pricing.
Along with this, it offers complete customizations and great flexibility with a global audience reach.
- Features: Call recording, caller ID, IVR, Multi-language, Personalization, mass texting, polling, scheduled messaging
- Pricing: Competitive pricing that is pay-as-you-go
- Industries: IT, financial, wellness, healthcare, aviation
Finally, the list is up and over, now we will focus on the next important in-app communication provider whose APIs help add exceptional SIP solutions, and that is,
How is MirrorFly’s in-app voice API the best SIP trunk provider?
IT developers and businesses always go ahead with MirrorFly’s self-hosted SIP/VoIP solution rather than other trunking providers for delivering faster and smoother calling experiences with the best response time. Other benefits include:
- 100% customizable: You can personalize your SIP calling app with any feature you need for retaining users.
- Call configuration: Configure SIP calls with the right setting using our custom solution.
- Custom security: You can create custom security solutions to protect your SIP platform with our self-hosted voice SDKs.
- 100+ integrations: Elevate calling experiences than the traditional phone systems with our solution that supports integrations to several third-party apps.
- Provider setup: Stop building SIP apps from scratch as with MirrorFly’s voice API, simply integrate exceptional voice calling capabilities into your apps.
- Hot desking: Use our SIP solution to give dedicated extension numbers to individual users of your firm.
- Well, these were some of the benefits you can avail of using our SIP/VoIP solution.
Wrapping Up!
That was all on the list of some of the top SIP trunking providers of this era. Well, we can see from the list that each provider differs from the rest in terms of benefits that might be suitable for businesses with specific needs.
So, if any of the providers meet your business needs, simply go ahead with it or integrate SIP trunking using our APIs for improved communication.
Related Articles:
- What is VoIP Phone? – A Complete Guide in 2025 for Beginners
- 10 Best VoIP Phones For Your Business: Full Review (2025)
- Build Voice Call API: A Step-by-Step Guide in 2025
- Top 5 Benefits of VoIP Call Center Solution In 2025
- List Of SIP Trunk Providers For All Types Of Businesses
Frequently Asked Questions:
How Much Do SIP Trunks Cost?
The cost of using SIP trunks usually varies based on certain factors like provider operator, feature set, and usage. Considering these, the cost might range somewhere between $20 and $50 per month. Additionally, operators charge additional fees for setting up SIP trunks.
How Does the SIP Protocol work?
The Session Initiation Protocol is a type of signaling protocol that facilitates the transfer of voice calls between two peers or endpoints by establishing connections between them.
Plus, it is a subset of VoIP technology that supports communication solutions like instant messaging, video conferencing, group voice calls, and more.
What’s the Difference Between SIP and VoIP?
SIP (Session Initiation Protocol) is a type of protocol that initiates and manages communication between two peers. Whereas, VoIP is a technology that facilitates voice communication over the Internet. In simple words, SIP is one of the protocols used in VoIP.
How Many Calls can a SIP Trunk Handle?
The number of calls that a SIP trunk can handle depends greatly on the provider’s bandwidth and hardware capacity. However, each SIP channel can support a single concurrent call. Suppose, if there are 10 channels, then you can make 10 concurrent calls.
What to Look for in Top SIP Trunk Providers?
While choosing a SIP trunk provider, check for the following factors:
1. Call volume
2. Reliability
3. Scalability
4. Pricing
5. Security & Privacy
6. DID numbers
What Is a SIP Service Provider?
A SIP service provider is a telecom company or any in-app communication provider like MirrorFly that provides SIP trunking capability to businesses and brands.
What are the Best SIP Trunk Providers in India?
Some of the best SIP trunk providers in India are Tata Communications, BSNL, Airtel, and Jio. However, we suggest that you do your research and compare each of its offerings before using them.
Is SIP More Secure than VoIP?
Both SIP and VoIP are secure if they are properly encrypted using strong encryption mechanisms. However, SIP being a protocol is highly insecure and vulnerable to eavesdropping and other types of attacks.
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Abirami is a trendsetter in bringing marketing ideas to reality. She is very keen on creating impactful marketing campaigns and learning the newest technologies in white label messaging APIs. And during her leisure, she can't spend a day without singing and reading.
