# Best VoIP Providers - Page 23

## How Many VoIP Providers Products Does G2 Track?

**Total Products under this Category:** 425

### Category Stats (Aug 2026)

- **Average Rating:** 4.37/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Phone2 (+4.77%) - Among all products in this category, Phone2 recorded the largest rating increase compared to last month

_Last updated: August 04, 2026_

## How Does G2 Rank VoIP Providers Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 61,300+ Authentic Reviews
- 425+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for VoIP Providers
 ![G2 Grid® for VoIP Providers plotting products by satisfaction and market presence](https://www.g2.com/categories/voip-providers/grids.png?focus%5B%5D=1173&focus%5B%5D=53495&focus%5B%5D=1451753&focus%5B%5D=129760&focus%5B%5D=16314&focus%5B%5D=18255&focus%5B%5D=70977&focus%5B%5D=71595)

Highlighted products: RingEX, Nextiva, Zoom Phone, Quo, Dialpad Connect, Webex Suite, Webex Calling, and 8x8 Work.

Underlying data: [Grid® JSON](https://www.g2.com/categories/voip-providers/grids.json?focus%5B%5D=ringex&focus%5B%5D=nextiva&focus%5B%5D=zoom-zoom-phone&focus%5B%5D=quo-quo&focus%5B%5D=dialpad-connect&focus%5B%5D=cisco-webex-suite&focus%5B%5D=webex-calling&focus%5B%5D=8x8-work)

**Sponsored**

### Techmode

Titanium 3CX Partner | Sapphire Avaya Partner Techmode was founded in 2003 and has been providing businesses the best in business phone systems for over 20 years. From private instance UCaaS to advanced Contact Center solutions, Techmode provides white glove installation and concierge level support to every client. TechmodeGO Collaboration Suite UCaaS Experience seamless collaboration with TechmodeGO’s all-in-one communication platform tailored for your business needs. Contact Center- Techmode offers a variety of Contact Center options to suite any business including Amazon Connect. SMS/MMS Business Texting Single Instance, private, high availability cloud phone systems

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=118&secure%5Bchosen_at%5D=2026-08-09T01%3A36%3A46Z&secure%5Bdisplayable_resource_id%5D=118&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=118&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1810487&secure%5Bresource_id%5D=118&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fvoip-providers%3Fpage%3D23%26review_source%3Dmktg&secure%5Btoken%5D=fe327ba2b5580f8dbac79410d4184adfde0277a8837d32ad157124f7613cefdf&secure%5Burl%5D=https%3A%2F%2Fwww.techmode.com%2Ftechmodego-collaboration-suite%2F%3Futm_source%3DG2%26utm_medium%3DG2%26utm_campaign%3DG2&secure%5Burl_type%5D=custom_url)

### [Kolmisoft MOR](https://www.g2.com/products/kolmisoft-mor/reviews)

MOR is a Class 5 Softswitch with in-built billing, intelligent routing (LCR, quality, percent, priority), number manipulation, rate management, and transcoding functionality. Telecommunication service providers use MOR to grow their voice business by automating their key operations, such as billing, routing, rate management, reporting, invoicing, and integrations through API. MOR can be used for SIP trunking, virtual PBX, DIDs, flat rates, call recording, call centers, resellers, and so on.

#### Who Is the Company Behind Kolmisoft MOR?

- **Seller:** [Kolmisoft](https://www.g2.com/sellers/kolmisoft)
- **Year Founded:** 2008
- **HQ Location:** Vilnius, LT
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d05505861e3344c9e685eafc543d599793b807598c2baba5907f1c09ea4018df&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fkolmisoft&secure%5Burl_type%5D=linkedin_company_website)  
13 employees on LinkedIn®

### [KOMPaaS](https://www.g2.com/products/kompaas/reviews)

KOMPaaS is a telecommunications platform that allows B2B customers to connect telephony software products and services in real-time: Virtual PBX with more than 200 useful functions, Geographic and Nomadic numbers, Chatbots, Automated calls, Multichat, Authentication (Confirmation Call) and other necessary services to automate the processes of interaction with customers. We are a registered telecom operator in four European countries: Austria, Hungary, Germany and Slovakia. The regulator has given us a numbering capacity of more than 50K fixed numbers, which we can connect using SIP Trunk.

#### Who Is the Company Behind KOMPaaS?

- **Seller:** [KOMPaaS.tech - Communication platform as a service for solving daily business tasks](https://www.g2.com/sellers/kompaas-tech-communication-platform-as-a-service-for-solving-daily-business-tasks)
- **Year Founded:** 2016
- **HQ Location:** Wien, AT
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=28250a14b7b7d6abba93de2454cb7fc264cfaf5e5f3c1700a39ffc68e616fc25&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fkompaastech%2F&secure%5Burl_type%5D=linkedin_company_website)  
7 employees on LinkedIn®

### [LetsDial](https://www.g2.com/products/letsdial/reviews)

Let'sDial, an extraordinary mobile application that revolutionizes international calling. With its remarkable features, Let'sDial enables VoIP calls from blocked countries, seamless SMS receiving and sending, and offers virtual phone numbers from over 100 diverse nations. Experience unbeatable outbound calling rates to more than 200 countries and benefit from Let'sDial's exceptional verification services for social media platforms. Unlock a plethora of additional features and enjoy a cutting-edge communication experience. Let'sDial—where innovation meets connectivity.

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind LetsDial?

- **Seller:** [Letsdial](https://www.g2.com/sellers/letsdial)
- **HQ Location:** Singapore, SG
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=247aa67dc10380a4448282e0f90f23a41643c12e4c49db374f6d6588b27008e9&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fletsdial&secure%5Burl_type%5D=linkedin_company_website)  
12 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

#### What Do G2 Reviewers Say About LetsDial?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **easy connectivity** of LetsDial, finding it user-friendly for seamless communication.
- Users appreciate the **user-friendly interface** of LetsDial, finding it easy to connect with others effortlessly.
- Users love the **easy connection** feature on LetsDial, enhancing their overall communication experience effortlessly.
- Users appreciate the **user-friendly interface** of LetsDial, making it easy to connect with others effortlessly.

#### What Are Recent G2 Reviews of LetsDial?

**["Good Expereince"](https://www.g2.com/survey_responses/letsdial-review-11180854)**

**Rating:** 5.0/5.0 stars

_— Tanya V._

[Read full review](https://www.g2.com/survey_responses/letsdial-review-11180854)

### [LimePhone](https://www.g2.com/products/limephone/reviews)

All the business calling and messaging features you need, without a phone system. LimePhone is your ultimate solution for convenient calling and texting. With LimePhone, you can enjoy the convenience of a virtual business number for private texting, seamless contact management, and more. Our mission is to simplify your communication needs by providing a second phone number equipped with a comprehensive range of features. Create a brand new local, national, toll free or mobile number, indulge in unlimited texting, and customize your voicemail just the way you like it, as if you were using your primary phone line. Stay organized with our mobile phone tools that ensure you never miss out on what's important. LimePhone's virtual phone number also offers handy features like Auto-Reply, text reminders, and coordinated number management, empowering you to take control of your conversations across all devices. Experience the reliability of LimePhone as your trusted private texting app when you establish a second number. Never let a conversation slip away with automatic chat replies for missed calls. With your second texting number, you can effortlessly send unlimited SMS, MMS, and text messages, enabling you to stay connected at all times.

#### Who Is the Company Behind LimePhone?

- **Seller:** [LimePhone](https://www.g2.com/sellers/limephone)
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5ba9b802bef3a3f409880ef8de2397586b545b7462086d25276466f7a9f556df&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flimephone%2F&secure%5Burl_type%5D=linkedin_company_website)

### [Lineblocs](https://www.g2.com/products/lineblocs/reviews)

Lineblocs is a completely customizable low-code/no-code communications solution designed and developed for #SMBs

#### Who Is the Company Behind Lineblocs?

- **Seller:** [Lineblocs](https://www.g2.com/sellers/lineblocs)
- **HQ Location:** Edmonton, CA
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c8788d6efca34626ad4313d69bd4ee24eedadc8cb9b5f50a1dbaa72fbb599d45&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flineblocs&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Lumen SIP Trunking](https://www.g2.com/products/lumen-sip-trunking/reviews)

CenturyLink® Hosted VoIP delivers advanced call management, enables mobility, and supports hybrid SIP configurations. CenturyLink was recently recognized by Frost & Sullivan with the 2018 Growth Excellence Leadership award for VoIP and SIP services​. CenturyLink Hosted VoIP delivers advanced call management, enables mobility, and supports hybrid SIP configurations. CenturyLink was recently recognized by Frost & Sullivan with the 2018 Growth Excellence Leadership award for VoIP and SIP services​. Our next-generation business VoIP solution helps improve workforce productivity. With PBX features and functionality without the expense of an on-site PBX, Hosted VoIP helps maximize the return on communication spend, reduced total cost of ownership, and eliminate large capital investments. Hosted VoIP offers advanced calling features over the CenturyLink privately owned fiber network using the BroadSoft BroadWorks platform. That means your calls can be routed fast, you can set multiple devices to ring at the same time or in a particular order, and you can get voicemail by phone, email, or online. Add, move, or change features easily online. And take advantage of the CenturyLink Business Communicator app that lets you talk or video chat, share your desktop or files, and instant message with colleagues. • Scales easily and includes all upgrades and improvements, at no additional cost • Uses phones from the Polycom VVX Series, an enterprise-grade family of IP desktop phones designed to make voice communications effective and productive. Hosted VoIP utilizes the Cisco SPA and Adtran 900 series Analog Telephone Adapters (ATAs). • Online portals allow you to easily monitor and manage your service."

#### Who Is the Company Behind Lumen SIP Trunking?

- **Seller:** [Lumen Technologies](https://www.g2.com/sellers/lumen-technologies)
- **Year Founded:** 1930
- **HQ Location:** Monroe, LA
- **Twitter:** @lumentechco  
9,154 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=bc4fef0fb816160b3c61d5e8cae1b60a9ba740ef91c8417ea60ca7d20f42ad59&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flumentechnologies%2F&secure%5Burl_type%5D=linkedin_company_website)  
49,367 employees on LinkedIn®
- **Ownership:** NYSE:LUMN

### [MCUBE Extension / PBX](https://www.g2.com/products/mcube-extension-pbx/reviews)

MCUBE Extension/PBX allows users to seamlessly transfer incoming calls to another phone number or extension. This can be useful in a variety of situations, such as when a caller needs to be transferred to a specific department or individual within an organization. The feature can be easily configured and used through the MCUBE interface, making it a convenient and efficient tool for managing incoming calls.

#### Who Is the Company Behind MCUBE Extension / PBX?

- **Seller:** [MCUBE](https://www.g2.com/sellers/mcube-4a8e04c2-b29e-4cf4-b2c6-91a13e432483)
- **Year Founded:** 2006
- **HQ Location:** Bangalore, IN
- **Twitter:** @MCUBE1234  
137 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=f86137df3ef70d9b1265108ff2336fa33194512f32a9cb229b05daa20bc02708&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fvmc-mcube%2F&secure%5Burl_type%5D=linkedin_company_website)  
104 employees on LinkedIn®

### [Mediacore SBC](https://www.g2.com/products/mediacore-sbc/reviews)

MediaCore SBC is our carrier-grade Class 4 Softswitch—an all-in-one solution for wholesale VoIP providers. It features automated processes, customizable and intelligent routing, advanced billing with rich reporting, secure VoIP termination, and built-in revenue assurance, enabling seamless, scalable, and dependable management of your telecom wholesale network

#### Who Is the Company Behind Mediacore SBC?

- **Seller:** [Speedflow Communications](https://www.g2.com/sellers/speedflow-communications)
- **Year Founded:** 2004
- **HQ Location:** London, GB
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=3c10aa144fb1e07e6b0444b3dc334a8015c7407ed59b21708665ae32f4c810cf&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fspeedflow-communications-ltd%2F&secure%5Burl_type%5D=linkedin_company_website)  
94 employees on LinkedIn®

### [Megacall](https://www.g2.com/products/megacall/reviews)

The dialer is the best solution for any call centre that doesnt want to lose valuable time making calls that could be considered dead-end or go unanswered.

#### Who Is the Company Behind Megacall?

- **Seller:** [Megacall](https://www.g2.com/sellers/megacall)
- **Year Founded:** 2008
- **HQ Location:** Mijas Costa, ES
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b3e207a890be4097cea2a279131467dda6e84cbac81dbff57fc31a7e27c09997&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmegacall%2F&secure%5Burl_type%5D=linkedin_company_website)  
28 employees on LinkedIn®

### [Mobex Hosted PBX](https://www.g2.com/products/mobex-hosted-pbx/reviews)

With Mobex, your phone service will be more valuable than ever. Mobex is more affordable and customizable than big phone service providers that box you into generic packages & contracts.

#### Who Is the Company Behind Mobex Hosted PBX?

- **Seller:** [Mobex Business Telecommunications](https://www.g2.com/sellers/mobex-business-telecommunications)
- **Year Founded:** 2012
- **HQ Location:** Tampa, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=eac64910217ef66b239fd929f673437ba0c918329e0e6e7f71ee79fac43a5b20&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmobex-business-telecommunications%2F&secure%5Burl_type%5D=linkedin_company_website)  
10 employees on LinkedIn®

### [MoSIP C5](https://www.g2.com/products/mosip-c5/reviews)

MoSIP C5: Next-generation softphone to manage all your business communications effectively from anywhere with a single app.

#### Who Is the Company Behind MoSIP C5?

- **Seller:** [Voxvalley](https://www.g2.com/sellers/voxvalley)
- **Year Founded:** 2010
- **HQ Location:** Gurnee, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=132197959e41751f1bf793f1bf11b034befdaa38f21ee03a700c96e989ddb4a0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fvoxvalley-technologies%2F&secure%5Burl_type%5D=linkedin_company_website)  
63 employees on LinkedIn®

### [M-Two VoIP Phone System](https://www.g2.com/products/m-two-voip-phone-system/reviews)

M-Two's VoIP Phone System offers businesses a modern, cost-effective telephony solution that replaces traditional copper phone lines with advanced Voice over Internet Protocol (VoIP technology. Designed to accommodate organizations ranging from small teams to enterprises with over 200 users, this system ensures seamless communication through a user-friendly web-based interface or a fully managed service. By integrating with platforms like Skype and Microsoft Teams, and supporting easy call forwarding to mobile devices, M-Two's VoIP system enhances connectivity and operational efficiency. Key Features and Functionality: - Scalability: Supports from 1 to over 200 phones, catering to businesses of various sizes. - Integration: Compatible with Skype, Microsoft Teams, and mobile devices, facilitating versatile communication channels. - User-Friendly Management: Offers an intuitive web-based interface for easy system administration. - Flexible Deployment: Provides both cloud-based PBX solutions for quick setup and on-premise PBX systems for enhanced features and robustness. - Comprehensive Hardware Support: Supplies and installs all necessary hardware, including 3CX PBX systems and Yealink phones, covering reception, desk, softphones, cell phones, and conferencing systems. Primary Value and Solutions Provided: M-Two's VoIP Phone System addresses the limitations of outdated copper phone lines by delivering a reliable, scalable, and feature-rich communication platform. It enables businesses to manage calls efficiently, integrate with modern collaboration tools, and adapt to evolving communication needs. The system's flexibility in deployment options and comprehensive hardware support ensures a tailored solution that enhances productivity and connectivity for users.

#### Who Is the Company Behind M-Two VoIP Phone System?

- **Seller:** [MTWO](https://www.g2.com/sellers/mtwo)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Nagish](https://www.g2.com/products/nagish/reviews)

Nagish is an AI-powered communication platform designed to make phone calls accessible for individuals who are deaf, hard of hearing, or have speech impediments. By converting speech to text and text to speech in real-time, Nagish enables users to engage in phone conversations seamlessly, ensuring privacy and independence without the need for third-party involvement.

#### Who Is the Company Behind Nagish?

- **Seller:** [Nagish](https://www.g2.com/sellers/nagish)
- **Year Founded:** 2021
- **HQ Location:** New York, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d1b91c18493b3f3a50fe685e691a28ca9e7f42cce807b4ed07784420c1191f42&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fnagish&secure%5Burl_type%5D=linkedin_company_website)  
33 employees on LinkedIn®

### [NEC Corporation of America](https://www.g2.com/products/nec-corporation-of-america/reviews)

Backed by over 120 years of innovation and experience, NEC knows what it takes to change and stay ahead of technology's continuous evolution. It is our capability to leverage decades of award-winning technologies and research that has enabled NEC to remain an ICT leader and through problem resolution to bring new value to people, organizations and society as a whole.

#### Who Is the Company Behind NEC Corporation of America?

- **Seller:** [NEC Corporation of America (NECAM)](https://www.g2.com/sellers/nec-corporation-of-america-necam)
- **Year Founded:** 1899
- **HQ Location:** Irving, Texas
- **Twitter:** @NEC  
14,511 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2c6cb1fe3bffe34ffe271e68f4f13c3f4fcc35a5c86356160a2f540ba67a7a79&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F2675380&secure%5Burl_type%5D=linkedin_company_website)  
685 employees on LinkedIn®
- **Ownership:** TYO:6701

### [NFON SIP Trunk](https://www.g2.com/products/nfon-sip-trunk/reviews)

NFON SIP Trunk is a cloud-enabled telephony gateway that helps businesses transition smoothly from legacy PBX setups to modern, IP-based communications. By leveraging VoIP technology and NFON’s carrier network, it connects your existing phone systems—including on-premises PBXs or Microsoft Teams—to the public telephone network and cloud services without needing hardware replacements. Benefits & Features Effortless transition: Maintain your current PBX hardware and phone infrastructure while gaining the flexibility of cloud-based telephony. You decide when and how to introduce additional features. - Scalable and cost-effective: Consolidate voice and data networks to reduce maintenance costs. Easily scale call volume and branch connectivity, and take advantage of competitive telephony tariffs. - Full control via self-service portal: Configure your SIP trunks independently using an intuitive web portal—manage number blocks, routing, and external call blocking all in one place. - Security, high availability & resilience: Protect your communications with features like call-blocking and fraud detection. High availability is built in via load distribution and backup systems across PBXs, ensuring uninterrupted service. - Flexible number routing: Assign phone numbers dynamically from one number block to multiple PBX endpoints—no need to purchase new blocks, lowering cost and complexity. - Seamless integrations: Connect SIP Trunk to modern tools like Microsoft Teams (via Direct Routing or Operator Connect) and contact-center platforms (e.g., Genesys Cloud), enabling unified telephony across systems. Best Practices in the Industry - Preserve existing infrastructure while evolving: By acting as a bridge to IP telephony, businesses avoid unnecessary hardware refreshes and preserve return on prior investments. - Modular, pay-as-you-go model: Subscription-based flexibility aligns spending with actual usage, supporting both conservative budgets and scaling operations. - Built for remote and hybrid workflows: Integration with UC tools and centralized management allows distributed teams to stay connected without friction. - Operational resilience through redundancy: Load balancing across backup PBXs ensures consistent service, even during infrastructure interruptions. - Self-management for speed and efficiency: Empowered via self-service portals, IT teams can quickly adjust routing, settings, and numbers without vendor dependencies.

#### Who Is the Company Behind NFON SIP Trunk?

- **Seller:** [NFON](https://www.g2.com/sellers/nfon)
- **Year Founded:** 2007
- **HQ Location:** Munich, DE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=321f7ddf53bc00006ac456e2211923cf58326d93a6c9c590270874c4aa4f43cb&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fnfon%2F&secure%5Burl_type%5D=linkedin_company_website)  
380 employees on LinkedIn®

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[Procure to Pay Software](https://www.g2.com/categories/procure-to-pay)

[Employee Recognition Software](https://www.g2.com/categories/employee-recognition)

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[Browse VoIP Providers Themes](/categories/voip-providers/themes)

 ![Neeraja Prakash](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Neeraja Prakash")
NP

Researched and written by [Neeraja Prakash](https://research.g2.com/insights/author/neeraja-prakash)

Updated April 9, 2026

Voice over Internet Protocol (VoIP) software transmits phone calls over an IP network without relying on traditional telephone infrastructure, functioning as a modern alternative to private branch exchange (PBX) systems. It helps organizations cut communication costs, support remote work, and maintain secure calling capabilities.

### Core Capabilities of Voice over Internet Protocol (VoIP) Software

To qualify for inclusion in the VoIP category, a product must:

- Provide VoIP PBX systems for businesses or offer a VoIP softphone application
- Include features that help manage incoming calls, such as call forwarding, call transferring, and routing
- Enable real-time network monitoring via dashboards
- Offer integration compatibility with communication and CRM platforms

### Common use cases for Voice over Internet Protocol (VoIP) Software

VoIP software supports scalable, reliable communication for internal collaboration and customer-facing interactions. It also benefits teams using related tools such as [video conferencing software](https://www.g2.com/categories/video-conferencing), [UCaaS platforms](https://www.g2.com/categories/ucaas-platforms), [contact center software](https://www.g2.com/categories/contact-center), and [CRM systems](https://www.g2.com/categories/crm).

### How Voice over Internet Protocol (VoIP) Software Differs from Other Tools

VoIP differs from traditional PBX by replacing legacy on-premises telephony systems with IP-based calling, reducing infrastructure and maintenance costs while improving flexibility for remote and hybrid teams. Compared with broader UCaaS platforms, VoIP primarily focuses on voice calling, softphones, and SIP-based PBX functionality, though VoIP is typically a core component of most UCaaS offerings.

### Insights from G2 on Voice over Internet Protocol (VoIP) Software

Based on category trends on G2, VoIP's reliability, cost savings, ease of remote access, and the convenience of softphone options that replace or supplement physical desk phones.

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