# Best VoIP Providers - Page 8

## 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**

### 3CX

3CX is a business communications system that replaces traditional PBXs. Offering one all encompassing solution for calls, video conferencing, live chat and messaging. It's open standard, meaning you can use it with any IP Phone or SIP trunk provider. Built for remote working and mobility through its apps for Android, iOS and the Web. This award-winning software innovates business connectivity and collaboration. enabling companies of all sizes to cut telco costs, boost employee productivity, and enhance customer experience. Benefits: Easy to install and manage; Low cost to buy and maintain. Available on-premise or hosted.

[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=2026-08-08T17%3A31%3A12Z&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=15858&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%3D8%26review_source%3Dmktg&secure%5Btoken%5D=4ee5b0dbdb49ae2465c5ac1ca84c6a88c3407913315dab8dc39e2565e474f7f4&secure%5Burl%5D=https%3A%2F%2Fwww.3cx.com%2Fpbx%2Fsip-trunks%2F%3Futm_source%3Dg2%26utm_medium%3Dclicks_campaign%26utm_content%3Dvoip&secure%5Burl_type%5D=custom_url)

### [Yeastar S-Series VoIP PBX](https://www.g2.com/products/yeastar-s-series-voip-pbx/reviews)

Easy to use, flexible and feature-rich S-Series VoIP PBX is designed to help small and medium sized business make a giant leap in efficiency and cost-savings.

**Average Rating:** 4.9/5.0

**Total Reviews:** 8

#### How Do G2 Users Rate Yeastar S-Series VoIP PBX?

- **Has the product been a good partner in doing business?:** 9.6/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 10.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 10.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Yeastar S-Series VoIP PBX?

- **Seller:** [Xiamen Yeastar Digital Technology Co., Ltd](https://www.g2.com/sellers/xiamen-yeastar-digital-technology-co-ltd)
- **Year Founded:** 2006
- **HQ Location:** Xiamen, China
- **Twitter:** @Yeastar  
2,504 Twitter followers
- **LinkedIn® Page:** [cn.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=556764252feba627b3e5b18cfc9537ac80dcac98efd705ffc4ef8736d8781568&secure%5Burl%5D=https%3A%2F%2Fcn.linkedin.com%2Fcompany%2Fyeastar&secure%5Burl_type%5D=linkedin_company_website)  
211 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 87% Small, 13% Medium

#### What Are Recent G2 Reviews of Yeastar S-Series VoIP PBX?

**["Efficient, User-Friendly, and Cost-Effective VoIP Solution"](https://www.g2.com/survey_responses/yeastar-s-series-voip-pbx-review-12844451)**

**Rating:** 4.5/5.0 stars

_— Mandla N._

[Read full review](https://www.g2.com/survey_responses/yeastar-s-series-voip-pbx-review-12844451)

**["This is a good product. Very reliable and recommended."](https://www.g2.com/survey_responses/yeastar-s-series-voip-pbx-review-4693256)**

**Rating:** 4.5/5.0 stars

_— Dinesh P._

[Read full review](https://www.g2.com/survey_responses/yeastar-s-series-voip-pbx-review-4693256)

#### What Are G2 Users Discussing About Yeastar S-Series VoIP PBX?

- [What is Yeastar S300?](https://www.g2.com/discussions/what-is-yeastar-s300)
- [What does a VoIP PBX do?](https://www.g2.com/discussions/what-does-a-voip-pbx-do)
- [What is Yeastar S20?](https://www.g2.com/discussions/what-is-yeastar-s20) - 1 comment
- [What features does our brand new P Series PBX system support?](https://www.g2.com/discussions/what-features-does-our-brand-new-p-series-pbx-system-support)

### [ASTPP - A Smart Telephony Platform](https://www.g2.com/products/astpp-a-smart-telephony-platform/reviews)

For many years, ASTPP has been empowering various VoIP businesses and service providers with its amazing open source VoIP solutions. It is regarded as one of the top VoIP billing solutions and the #1 open source FreeSWITCH-driven Class 4/5 Softswitch Platform, which automates invoicing and billing processes completely. ASTPP is one of few solutions that support the N-level reseller structure. It uses cutting edge technologies like FreeSWITCH and OpenSIPs as core technologies to provide the most robust, reliable, and scalable solutions. ASTPP is a smart telephony platform, which has a suite of smart VoIP telephony solutions to offer to service providers and businesses, including, but not limited to: -Class 4 Softswitch -Class 5 Softswitch -Multi tenant IP PBX solution -Calling card solution -Virtual faxing solution -Virtual numbers solution -Routing & Billing Solution ASTPP has a team of versatile VoIP consultants and developers that provides various services in different VoIP technologies: -Consultancy -Development -Deployment -Support -ASTPP Training & Certification -And more ASTPP is a one stop VoIP solution for ITSPs, VoIP service providers, wholesale providers, and any other business.

**Average Rating:** 4.6/5.0

**Total Reviews:** 7

#### How Do G2 Users Rate ASTPP - A Smart Telephony Platform?

- **Has the product been a good partner in doing business?:** 7.8/10 (Category avg: 8.8/10)
- **Phone Calls:** 9.3/10 (Category avg: 9.1/10)
- **VOiP Number:** 9.3/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 8.3/10 (Category avg: 8.6/10)

#### Who Is the Company Behind ASTPP - A Smart Telephony Platform?

- **Seller:** [ASTPP](https://www.g2.com/sellers/astpp)
- **Year Founded:** 2013
- **HQ Location:** Ahmedabad, IN
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=26918d881571dc57c652d9a4906e7463f2708053d6fff23d5a730c5cff6b0811&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fastpp-billing%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 88% Small, 13% Medium

#### What Do G2 Reviewers Say About ASTPP - A Smart Telephony Platform?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **ease of use** of ASTPP, appreciating its user-friendly interface and accessibility.
- Users appreciate the **easy access** of ASTPP, finding it user-friendly and customizable for their VoIP needs.
- Users appreciate the **user-friendly interface** of ASTPP, making it easy to use and access for everyone.
- Users appreciate the **easy-to-use VoIP solutions** and excellent community support offered by ASTPP.
- Users find the **easy integration** of ASTPP straightforward, allowing for quick and effective configuration to meet needs.

##### Cons

- Users find the **customer service lacking** , which negatively impacts their overall experience with ASTPP.
- Users often find **time constraints** frustrating, particularly with bill creation and slow customer support response.

#### What Are Recent G2 Reviews of ASTPP - A Smart Telephony Platform?

**["Review for ASTPP"](https://www.g2.com/survey_responses/astpp-a-smart-telephony-platform-review-10742643)**

**Rating:** 5.0/5.0 stars

_— Manokh H._

[Read full review](https://www.g2.com/survey_responses/astpp-a-smart-telephony-platform-review-10742643)

**["Open Source Customizable Best VoIP Solutions"](https://www.g2.com/survey_responses/astpp-a-smart-telephony-platform-review-10756585)**

**Rating:** 5.0/5.0 stars

_— Soumili D._

[Read full review](https://www.g2.com/survey_responses/astpp-a-smart-telephony-platform-review-10756585)

### [AT&T Office@Hand](https://www.g2.com/products/at-t-office-hand/reviews)

AT&T Office@Hand is a flexible cloud-based solution that provides voice, fax, text messaging, and audio and video conferencing so workers can be more productive in the office or on the go.

**Average Rating:** 4.1/5.0

**Total Reviews:** 11

#### How Do G2 Users Rate AT&T Office@Hand?

- **Has the product been a good partner in doing business?:** 7.3/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 10.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 10.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind AT&T Office@Hand?

- **Seller:** [AT&T Inc.](https://www.g2.com/sellers/at-t-inc)
- **Year Founded:** 1876
- **HQ Location:** Dallas, TX
- **Twitter:** @ATT  
876,351 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2fa4728477e8f8786d022d545a2466f49f7092896c35eae9774ae10aa4074034&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fatt%2F&secure%5Burl_type%5D=linkedin_company_website)  
190,948 employees on LinkedIn®
- **Ownership:** NYSE: T

#### Who Uses This Product?

- **Company Size:** 56% Small, 33% Medium

#### What Do G2 Reviewers Say About AT&T Office@Hand?

_AI-generated summary from verified user reviews_

##### Pros

- Users love the **ease of use** of AT&T Office@Hand, particularly for seamless remote work and device integration.
- Users appreciate the **easy communication** of AT&T Office@Hand, streamlining calls, video, and collaboration on one platform.
- Users appreciate the **all-in-one platform** of AT&T Office@Hand, enhancing team collaboration and boosting productivity.
- Users value the **enhanced communication** capabilities of AT&T Office@Hand, streamlining calls and collaborations seamlessly.
- Users find the **cross-platform compatibility** of AT&T Office@Hand excellent for seamless remote work across devices.

##### Cons

- Users experience **call drops** and glitches in the mobile app, particularly in areas with low signal strength.
- Users report encountering **glitches** in the mobile app, affecting call quality and overall reliability.
- Users report occasional **performance issues** with video conferencing features, impacting the overall experience despite other positive aspects.
- Users experience **poor call quality** with AT&T Office@Hand, particularly in low-signal areas, impacting communication effectiveness.
- Users experience **slow video conferencing features** , which affects the overall performance despite other positive aspects.

#### What Are Recent G2 Reviews of AT&T Office@Hand?

**["I really like AT&T office@ hand application"](https://www.g2.com/survey_responses/at-t-office-hand-review-11409150)**

**Rating:** 5.0/5.0 stars

_— Sumit N._

[Read full review](https://www.g2.com/survey_responses/at-t-office-hand-review-11409150)

**["All in one communication platform"](https://www.g2.com/survey_responses/at-t-office-hand-review-11434001)**

**Rating:** 5.0/5.0 stars

_— Alejandra A._

[Read full review](https://www.g2.com/survey_responses/at-t-office-hand-review-11434001)

#### What Are G2 Users Discussing About AT&T Office@Hand?

- [What is AT&T Office@Hand used for?](https://www.g2.com/discussions/what-is-at-t-office-hand-used-for)

### [Hosted PBX Business Phone System](https://www.g2.com/products/hosted-pbx-business-phone-system/reviews)

Aancall is a global UCaaS and CCaaS provider delivering unified communications and cloud contact center solutions powered by AI. The platform enables businesses to connect, collaborate, and engage customers through voice, video, messaging, and intelligent call management. Aancall provides high-quality VoIP services, including SIP trunking in 120+ countries and DID numbers across 65+ countries, ensuring reliable global reach and local presence. With AI-driven capabilities such as smart routing, call analytics, automation, and customer insights, Aancall helps organizations improve efficiency, enhance customer experience, and scale communications securely and seamlessly. Designed for enterprises, startups, and service providers, Aancall combines global connectivity, advanced AI, and cloud-based communications into one powerful platform.

**Average Rating:** 4.8/5.0

**Total Reviews:** 8

#### How Do G2 Users Rate Hosted PBX Business Phone System?

- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)

#### Who Is the Company Behind Hosted PBX Business Phone System?

- **Seller:** [Aancall](https://www.g2.com/sellers/aancall)
- **HQ Location:** Wyoming USA
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2ef59ae3d496e450a846e99978134f121e2706e3893881ab32a955d618ec0d4d&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F106799117%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®
- **Phone:** 3074106456

#### Who Uses This Product?

- **Company Size:** 63% Small, 13% Large

#### What Do G2 Reviewers Say About Hosted PBX Business Phone System?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **easy access** of the Hosted PBX Business Phone System, enhancing their communication experience with seamless Teams integration.
- Users appreciate the **easy access and seamless Teams integration** of the Hosted PBX Business Phone System.
- Users value the **prompt and helpful customer support** provided by the AANCALL team for the Hosted PBX system.
- Users find the **ease of use** of the Hosted PBX system refreshing, making setup and operation straightforward.
- Users appreciate the **easy access** of the Hosted PBX Business Phone System, benefiting from seamless Teams integration and simplified calling.

##### Cons

- Users note the **lack of intuitive contact management** , wishing for improved integration and visibility of important information.
- Users find the **dialing issues** frustrating, with required prefixes and lack of balance visibility impacting their experience.
- Users note the **inadequate AI integration** , wishing for improved features like balance display and better Teams compatibility.
- Users feel there are significant **integration issues** , affecting usability and causing frustration with necessary prefixes.
- Users note the **missing features** such as prefix requirements and lack of integration with Teams for better usability.

#### What Are Recent G2 Reviews of Hosted PBX Business Phone System?

**["Handy, Easy-to-Use App with Plenty of Options—Great on Mobile"](https://www.g2.com/survey_responses/hosted-pbx-business-phone-system-review-12729410)**

**Rating:** 5.0/5.0 stars

_— anushka s._

[Read full review](https://www.g2.com/survey_responses/hosted-pbx-business-phone-system-review-12729410)

**["Easy to Navigate, Great Call Connectivity, and Affordable Pricing"](https://www.g2.com/survey_responses/hosted-pbx-business-phone-system-review-13076882)**

**Rating:** 5.0/5.0 stars

_— JAY M._

[Read full review](https://www.g2.com/survey_responses/hosted-pbx-business-phone-system-review-13076882)

### [NobelBiz Voice Carrier Network](https://www.g2.com/products/nobelbiz-voice-carrier-network/reviews)

The NobelBiz Voice Carrier Network is the only VoIP interconnected provider built to service contact-center-specific traffic, with multiple redundancies across the globe. As a result, our telecom network offers uninterrupted uptime and an impressive geographical footprint, delivering the best possible voice quality at a fair price. Because we focus solely on the contact center niche, all the features and support processes were fine-tuned to maximize the efficiency, quality, and demands of the call center industry. In addition, the NobelBiz Voice Carrier Network features a multitude of optional productivity tools such as local caller ID solutions, compliance safety nets, number management, and a web-based auto-attendant platform, to name but a few.

**Average Rating:** 4.4/5.0

**Total Reviews:** 10

#### How Do G2 Users Rate NobelBiz Voice Carrier Network?

- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 10.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 10.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind NobelBiz Voice Carrier Network?

- **Seller:** [NobelBiz](https://www.g2.com/sellers/nobelbiz)
- **Year Founded:** 2005
- **HQ Location:** Cheyenne, WY
- **Twitter:** @NobelBiz  
569 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=422c935e4ef3acba45518414a31809026e042ebd0598cbf1a04e5e7f955d3ad5&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fnobelbiz-inc-%2F&secure%5Burl_type%5D=linkedin_company_website)  
35 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 60% Small, 30% Large

#### What Do G2 Reviewers Say About NobelBiz Voice Carrier Network?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **reliability** of NobelBiz Voice Carrier Network, enhancing caller ID rotation and ensuring consistent call quality.
- Users commend the **effective CLI management** by NobelBiz, enhancing connectivity and trustworthiness in outbound calling.
- Users value the **high call quality** of NobelBiz Voice Carrier Network, relying on it for both outbound and daily communication.
- Users value the **reliable connectivity options** provided by NobelBiz, enhancing their outbound calling effectiveness and customer experience.
- Users appreciate the **excellent customer service** of NobelBiz, noting their promptness and commitment to customer satisfaction.

##### Cons

- Users find the **process of purchasing DIDs could improve** , as it can lead to receiving incorrect numbers.
- Users find the **high cost** of NobelBiz Voice Carrier Network challenging, despite reduced outbound rates over time.
- Users experience **number issues** when purchasing DIDs, leading to confusion with numbers assigned to other companies.

#### What Are Recent G2 Reviews of NobelBiz Voice Carrier Network?

**["Caller id rotation is a must for outbound business"](https://www.g2.com/survey_responses/nobelbiz-voice-carrier-network-review-7351086)**

**Rating:** 5.0/5.0 stars

_— Carlos B._

[Read full review](https://www.g2.com/survey_responses/nobelbiz-voice-carrier-network-review-7351086)

**["Peace of Mind"](https://www.g2.com/survey_responses/nobelbiz-voice-carrier-network-review-7300375)**

**Rating:** 5.0/5.0 stars

_— Ahfaz K._

[Read full review](https://www.g2.com/survey_responses/nobelbiz-voice-carrier-network-review-7300375)

#### What Are G2 Users Discussing About NobelBiz Voice Carrier Network?

- [What is NobelBiz Voice Carrier Network used for?](https://www.g2.com/discussions/what-is-nobelbiz-voice-carrier-network-used-for)

### [Unified Communications Applications](https://www.g2.com/products/unified-communications-applications/reviews)

At its best, unified communications (also called “UC”) is just what it says – it enables better collaboration by unifying formerly separate modes of communication into a single, combined user experience. Email, text, and voice messaging work seamlessly with live voice, audio and video conferencing, and Web collaboration, in one interface, with “presence” notification to indicate your availability to participate.

**Average Rating:** 4.3/5.0

**Total Reviews:** 7

#### How Do G2 Users Rate Unified Communications Applications?

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 10.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 10.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Unified Communications Applications?

- **Seller:** [Mitel Networks](https://www.g2.com/sellers/mitel-networks-01d2c63e-d7d9-47b7-9278-bf4db28c95a9)
- **Year Founded:** 1972
- **HQ Location:** Kanata, Ontario
- **Twitter:** @Mitel  
22,451 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5a4734231cccb07e4478cf7d109b6d1ed6635375229b8f5b42c0a5461f77465b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F4924%2F&secure%5Burl_type%5D=linkedin_company_website)  
4,011 employees on LinkedIn®
- **Total Revenue (USD mm):** $1,300

#### Who Uses This Product?

- **Company Size:** 57% Medium, 43% Large

#### What Are Recent G2 Reviews of Unified Communications Applications?

**["Unified Communications Applications are a must for any business"](https://www.g2.com/survey_responses/unified-communications-applications-review-8873461)**

**Rating:** 5.0/5.0 stars

_— Verified User in Oil & Energy_

[Read full review](https://www.g2.com/survey_responses/unified-communications-applications-review-8873461)

**["Made our communication strategy stronger"](https://www.g2.com/survey_responses/unified-communications-applications-review-9502342)**

**Rating:** 5.0/5.0 stars

_— Verified User in Telecommunications_

[Read full review](https://www.g2.com/survey_responses/unified-communications-applications-review-9502342)

#### What Are G2 Users Discussing About Unified Communications Applications?

- [What are the 3 main components of unified communications?](https://www.g2.com/discussions/unified-communications-what-are-the-3-main-components-of-unified-communications-c71fbf30-f0b7-4af7-91cb-44c533dd6b34)
- [What are the 3 main components of unified communications?](https://www.g2.com/discussions/unified-communications-what-are-the-3-main-components-of-unified-communications-44611f70-dc55-413e-ae66-eefec87ff526)
- [What are the 3 main components of unified communications?](https://www.g2.com/discussions/unified-communications-what-are-the-3-main-components-of-unified-communications-6e58087c-42d2-4cbc-838a-98d6edded494)
- [What are the 3 main components of unified communications?](https://www.g2.com/discussions/unified-communications-what-are-the-3-main-components-of-unified-communications)
- [What is included in unified communications?](https://www.g2.com/discussions/unified-communications-what-is-included-in-unified-communications-89865105-9a75-4fbe-bfad-4aa9778a04e1)

### [Velocity Voice](https://www.g2.com/products/velocity-voice/reviews)

By switching your telephone service over to Velocity Voice you can save your business thousands of dollars annually when compared to a traditional telephone line or analog phone system

**Average Rating:** 4.0/5.0

**Total Reviews:** 7

#### How Do G2 Users Rate Velocity Voice?

- **Phone Calls:** 9.2/10 (Category avg: 9.1/10)
- **VOiP Number:** 9.2/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 9.2/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Velocity Voice?

- **Seller:** [Velocity Voice](https://www.g2.com/sellers/velocity-voice)
- **HQ Location:** Dallas, Texas
- **Twitter:** @velocityvoice1  
3 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=0b954aed293fe282c40e70aa4e562ccb0b09f8b2a9d65655a8e60ca3787d63d2&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F10991398&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 71% Medium, 43% Large

#### What Are Recent G2 Reviews of Velocity Voice?

**["Best Business Comms"](https://www.g2.com/survey_responses/velocity-voice-review-9565895)**

**Rating:** 5.0/5.0 stars

_— M Anand B._

[Read full review](https://www.g2.com/survey_responses/velocity-voice-review-9565895)

**["Best dialers for an outbound calling"](https://www.g2.com/survey_responses/velocity-voice-review-9637744)**

**Rating:** 4.0/5.0 stars

_— Ankit G._

[Read full review](https://www.g2.com/survey_responses/velocity-voice-review-9637744)

#### What Are G2 Users Discussing About Velocity Voice?

- [What is Velocity Voice used for?](https://www.g2.com/discussions/what-is-velocity-voice-used-for)

### [Diabolocom](https://www.g2.com/products/diabolocom/reviews)

Diabolocom is a leading European provider of AI-first cloud contact center and customer experience solutions. Our platform helps organizations manage omnichannel customer interactions at scale while improving service quality, agent productivity, and operational efficiency. Built on proprietary AI technologies, native telecom infrastructure, and advanced CRM integrations, Diabolocom helps customer service and sales teams deliver faster, smarter, and more personalized interactions. Our all-in-one platform supports inbound and outbound communications, high-volume call management, auto-dialing, workflow automation, real-time monitoring, and AI-powered assistance for agents and supervisors. It helps teams manage every customer interaction more efficiently, from first contact to final resolution. Diabolocom provides the essential features businesses need to manage customer interactions effectively, while continuously innovating with sovereign AI solutions designed for customer service and sales teams. Our AI-powered solutions include: - Interactive Virtual Agent, - Agent Assist, - Augmented Quality Monitoring. Interactive Virtual Agent helps businesses provide 24/7 customer support. It answers customer requests automatically and can be configured easily through Diabolocom’s interface. When human assistance is needed, the interaction can be transferred smoothly to an agent. Agent Assist supports agents in real time during customer conversations. It combines conversation analytics, automated call summaries, next-best-action recommendations, form completion, knowledge base access, and automated workflows. This helps agents save time, reduce manual work, and provide more accurate answers. Augmented Quality Monitoring helps supervisors evaluate customer interactions at scale. With AI, teams can review far more calls than would be possible manually. They can identify coaching opportunities, detect quality trends, and monitor performance through clear dashboards. Together, these capabilities help businesses automate repetitive tasks, improve quality management, strengthen customer engagement, and make faster, data-driven decisions. Diabolocom’s innovation has been recognized by Frost & Sullivan with the 2024 Product Leadership Award and the 2026 European Technology Innovation Leadership Award. For over 20 years, Diabolocom has supported more than 400 clients and now operates in over 60 countries, with 175+ employees across 8 global offices.

**Average Rating:** 4.3/5.0

**Total Reviews:** 32

#### How Do G2 Users Rate Diabolocom?

- **Has the product been a good partner in doing business?:** 8.6/10 (Category avg: 8.8/10)
- **Phone Calls:** 6.7/10 (Category avg: 9.1/10)
- **VOiP Number:** 7.8/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 5.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Diabolocom?

- **Seller:** [Diabolocom](https://www.g2.com/sellers/diabolocom)
- **Company Website:** www.diabolocom.com
- **Year Founded:** 2005
- **HQ Location:** Paris, FR
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=46fd61cc87510788779b3b660192ed8a0a06b2608487a6d3bd2ea048b0259209&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdiabolocom%2F&secure%5Burl_type%5D=linkedin_company_website)  
178 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Consumer Services
- **Company Size:** 60% Medium, 29% Small

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

_AI-generated summary from verified user reviews_

##### Pros

- Users find Diabolocom's **ease of use** exceptional, facilitating quick adaptation and seamless integration into their workflows.
- Users praise the **exceptionally responsive customer support** of Diabolocom, ensuring smooth implementation and valuable guidance.
- Users commend Diabolocom's **customization options** , allowing seamless integration and tailored solutions that enhance efficiency.
- Users commend the **easy implementation** of Diabolocom, benefiting from swift deployment and responsive customer support.
- Users commend Diabolocom for its **efficiency** in managing multichannel communication, significantly enhancing productivity and user experience.

##### Cons

- Users find the **missing features** in Diabolocom, particularly in integration and basic functionalities, quite limiting.
- Users find it challenging to reach **customer service support** , which hinders their ability to optimize workflows effectively.
- Users often experience **delays up to 30 minutes** during updates, disrupting workflow and causing frustration.
- Users find Diabolocom's **rigid pre-configured workflows** limiting, hindering customization and affecting efficiency in processes.
- Users find the **limited customization** of Diabolocom restricts adapting workflows to their specific customer service needs.

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

**["Reliable Dialer with Powerful Workflows and Minimal Downtime"](https://www.g2.com/survey_responses/diabolocom-review-13130328)**

**Rating:** 4.5/5.0 stars

_— Martin F._

[Read full review](https://www.g2.com/survey_responses/diabolocom-review-13130328)

**["Easy to Use, Great Support, Limited Workflows"](https://www.g2.com/survey_responses/diabolocom-review-13130309)**

**Rating:** 4.5/5.0 stars

_— albane l._

[Read full review](https://www.g2.com/survey_responses/diabolocom-review-13130309)

### [Opus Cloud Telephony](https://www.g2.com/products/opus-cloud-telephony/reviews)

Hosted or Cloud Telephony is being adopted by an increasing number of organisations as a means to refresh to their communications technology and a boost to competitive advantage, without the need for large capital investment.

**Average Rating:** 4.6/5.0

**Total Reviews:** 6

#### How Do G2 Users Rate Opus Cloud Telephony?

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.8/10)
- **Phone Calls:** 10.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 9.2/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 9.6/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Opus Cloud Telephony?

- **Seller:** [Opus Telecoms](https://www.g2.com/sellers/opus-telecoms)
- **HQ Location:** Farnham
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ba1079a7054761545653d5bd0c7e6a547e04381faf76520d71c4ef0088c7bfc0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fopus-telecom-limited&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 83% Large, 17% Small

#### What Are Recent G2 Reviews of Opus Cloud Telephony?

**["G2 for Opus Cloud Telephony"](https://www.g2.com/survey_responses/opus-cloud-telephony-review-7942785)**

**Rating:** 5.0/5.0 stars

_— Anupam Y._

[Read full review](https://www.g2.com/survey_responses/opus-cloud-telephony-review-7942785)

**["End to end solution to all telecommunication needs"](https://www.g2.com/survey_responses/opus-cloud-telephony-review-5258552)**

**Rating:** 4.0/5.0 stars

_— Sushant V._

[Read full review](https://www.g2.com/survey_responses/opus-cloud-telephony-review-5258552)

#### What Are G2 Users Discussing About Opus Cloud Telephony?

- [What is Opus Cloud Telephony used for?](https://www.g2.com/discussions/what-is-opus-cloud-telephony-used-for)

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

smrtPhone is an all-in-one phone system that allows sales-driven businesses to make more calls, send more texts, and close more deals. The cloud-based phone, multi-line power dialer, integrated AI tools that capture call summaries, keywords, and outcomes, full featured mobile app, customizable call flows, and robust suite of user management tools flex and grow with you. Focused on delivering deep integration with your CRM, smrtPhone powers greater automation, reduces time spent on clerical tasks, and gives valuable insight enabling you to do business better.

**Average Rating:** 3.9/5.0

**Total Reviews:** 6

#### How Do G2 Users Rate smrtphone?

- **Has the product been a good partner in doing business?:** 6.7/10 (Category avg: 8.8/10)
- **Phone Calls:** 5.6/10 (Category avg: 9.1/10)
- **VOiP Number:** 5.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 5.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind smrtphone?

- **Seller:** [smrtStudio Global](https://www.g2.com/sellers/smrtstudio-global)
- **Year Founded:** 2017
- **HQ Location:** Middletown, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c70410a3bbf3ebc2e94c3b7c75482466ddab251f9079b8b08c9686296fb7ea84&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsmrtphoneapp&secure%5Burl_type%5D=linkedin_company_website)  
35 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Real Estate
- **Company Size:** 100% Small

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

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **ease of use** of Smrtphone, praising its simple setup and seamless integration with CRM systems.
- Users value the **easy communication** features of smrtPhone, enhancing their ability to connect with prospects efficiently.
- Users appreciate the **easy integration** of smrtPhone with their CRM, enhancing their communication experience effortlessly.
- Users value the **click-to-call feature** on smrtphone, enhancing communication efficiency through Podio.
- Users value the **click-to-call functionality** of smrtPhone, enhancing communication efficiency and ease of use.

##### Cons

- Users find the **cost of smrtPhone** to be quite high compared to the functionality offered, causing dissatisfaction.
- Users highlight the **high cost** of smrtPhone, considering it an expensive investment with insufficient performance for the price.
- Users express frustration over **internet dependency** issues, negatively impacting functionality and overall satisfaction with smrtPhone.
- Users face significant **call connectivity issues** with Smrtphone, leading to frustrating experiences and poor customer support.
- Users often experience **call drops** and report their numbers being marked as spam by many sellers.

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

**["Smart Calls, Smarter Business: My Experience with smrtPhone"](https://www.g2.com/survey_responses/smrtphone-review-11088016)**

**Rating:** 5.0/5.0 stars

_— Juliet E._

[Read full review](https://www.g2.com/survey_responses/smrtphone-review-11088016)

**["Seamless Call Management with Top-Notch Support"](https://www.g2.com/survey_responses/smrtphone-review-12085650)**

**Rating:** 5.0/5.0 stars

_— Tanika B._

[Read full review](https://www.g2.com/survey_responses/smrtphone-review-12085650)

### [Thirdlane Connect](https://www.g2.com/products/thirdlane-connect/reviews)

Thirdlane Connect is a white-label team collaboration tool with voice, omnichannel messaging, and video for MSPs, service providers, and telecom resellers on Thirdlane’s multi-tenant UCaaS platform. Deliver branded calling, chat, and meetings across web, desktop, and mobile with APIs and CRM integrations. Main features: - VoIP calling, call recording, transfer, and hold - Team chat for 1:1 and groups - Video meetings with screen sharing - Presence and status sync - File sharing and inline media - Click-to-call and CRM screen pops - Branded apps for web, Windows, macOS, Linux, iOS, and Android See how Thirdlane helps MSPs, UCaaS providers, resellers, and enterprises deliver white-label multi-tenant communications. Request a live demo today: https://www.thirdlane.com

**Average Rating:** 4.3/5.0

**Total Reviews:** 21

#### How Do G2 Users Rate Thirdlane Connect?

- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Thirdlane Connect?

- **Seller:** [Thirdlane](https://www.g2.com/sellers/thirdlane)
- **Year Founded:** 2003
- **HQ Location:** Fairfax, US
- **Twitter:** @thirdlanepbx  
47 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=93c35e78540d840f321aab0315a24d8f73792dcd50969dbf5c6e6b0eb64dc90f&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fthird-lane-technologies-llc%2Fabout&secure%5Burl_type%5D=linkedin_company_website)  
4 employees on LinkedIn®
- **Ownership:** Third Lane Technologies, LLC

#### Who Uses This Product?

- **Company Size:** 41% Small, 30% Medium

#### What Do G2 Reviewers Say About Thirdlane Connect?

_AI-generated summary from verified user reviews_

##### Pros

- Users find Thirdlane Connect easy to use, providing **seamless communication** that enhances workflow and professionalism.
- Users appreciate the **easy communication** provided by Thirdlane Connect, enhancing workflow with its all-in-one interface.
- Users commend Thirdlane Connect for its **seamless communication integration** , enhancing collaboration through direct chats, calls, and video conferences.
- Users commend the **easy setup** of Thirdlane Connect, enhancing productivity with its user-friendly interface and seamless integration.
- Users admire the **intuitive interface** of Thirdlane Connect, enhancing productivity through seamless communication across devices.

##### Cons

- Users struggle with the **complex setup processes** of Thirdlane Connect, citing a steep learning curve for non-technical users.
- Users often struggle with the **difficult setup** of Thirdlane Connect, finding the configuration overwhelming for non-technical users.
- Users struggle with the **steep learning curve** of Thirdlane Connect, making initial setup and navigation challenging for newcomers.
- Users express that the **user interface feels dated and complex** , making initial setup challenging for less technical users.
- Users often face a **difficult interface** with Thirdlane Connect, particularly during initial setup and navigation challenges.

#### What Are Recent G2 Reviews of Thirdlane Connect?

**["Easy to Use with Reliable Call Quality and Strong Collaboration Features"](https://www.g2.com/survey_responses/thirdlane-connect-review-12894921)**

**Rating:** 5.0/5.0 stars

_— PAWAN KUMAR K._

[Read full review](https://www.g2.com/survey_responses/thirdlane-connect-review-12894921)

**["Comprehensive Communication Hub with Steep Setup"](https://www.g2.com/survey_responses/thirdlane-connect-review-13095192)**

**Rating:** 4.0/5.0 stars

_— Rehant S._

[Read full review](https://www.g2.com/survey_responses/thirdlane-connect-review-13095192)

#### What Are G2 Users Discussing About Thirdlane Connect?

- [What is Thirdlane Connect used for?](https://www.g2.com/discussions/what-is-thirdlane-connect-used-for)

### [Twilio Flex](https://www.g2.com/products/twilio-twilio-flex/reviews)

Modernize your customer and employee experience in place by embedding voice, SMS, WhatsApp, and email into the apps you already use. Twilio Flex orchestrates interactions across channels, AI-driven automation, and human agents so conversations stay connected and context stays intact. Human agents get a complete view of every interaction without switching between tools or piecing together fragmented data. With a composable architecture and User + Usage pricing, you only pay for what you use and control how you build and scale customer experiences.

**Average Rating:** 4.1/5.0

**Total Reviews:** 31

#### How Do G2 Users Rate Twilio Flex?

- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.8/10)
- **Phone Calls:** 8.3/10 (Category avg: 9.1/10)
- **VOiP Number:** 9.2/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 10.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Twilio Flex?

- **Seller:** [Twilio](https://www.g2.com/sellers/twilio)
- **Year Founded:** 2008
- **HQ Location:** San Francisco, CA
- **Twitter:** @twilio  
81,644 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=3c9f98055e4a813ded4435e17926040455f87f0f05caa8b1303fd97ab3681e53&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftwilio-inc-%2F&secure%5Burl_type%5D=linkedin_company_website)  
6,678 employees on LinkedIn®
- **Ownership:** NYSE: TWLO

#### Who Uses This Product?

- **Top Industries:** Information Technology and Services, Insurance
- **Company Size:** 39% Medium, 28% Small

#### What Do G2 Reviewers Say About Twilio Flex?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **easy integration** of Twilio Flex with existing tools, enhancing efficiency and customization capabilities.
- Users value the **seamless integrations** in Twilio Flex, enhancing efficiency and customization in their contact center operations.
- Users praise the **seamless chat integration** in Twilio Flex, enhancing efficiency and user experience in contact centers.
- Users praise the **seamless chat integration** in Twilio Flex, enhancing efficiency and user experience within the contact center.
- Users admire the **high customizability** of Twilio Flex, enabling tailored solutions for their specific contact center needs.

##### Cons

- Users find Twilio Flex's **limited features** challenging, requiring extensive customization and technical support for effective use.
- Users find the **missing functionality** in Twilio Flex challenging, needing significant customization and technical support for optimal use.
- Users find Twilio Flex's **complex features** challenging, needing significant technical support and customization for effective implementation.
- Users find Twilio Flex's **complexity** challenging, requiring considerable technical support and customization for effective use.
- Users find that the **complex processes** in Twilio Flex demand extensive technical support and customization efforts.

#### What Are Recent G2 Reviews of Twilio Flex?

**["Twilio Flex: Easy, Cost-Effective Softphone with Helpful Support"](https://www.g2.com/survey_responses/twilio-flex-review-12458273)**

**Rating:** 4.0/5.0 stars

_— Ashton P._

[Read full review](https://www.g2.com/survey_responses/twilio-flex-review-12458273)

**["Versatile and Customizable, but Requires Technical Investment"](https://www.g2.com/survey_responses/twilio-flex-review-5060854)**

**Rating:** 5.0/5.0 stars

_— Verified User in Health, Wellness and Fitness_

[Read full review](https://www.g2.com/survey_responses/twilio-flex-review-5060854)

#### What Are G2 Users Discussing About Twilio Flex?

- [How good is twilio?](https://www.g2.com/discussions/how-good-is-twilio)
- [How much is twilio Flex?](https://www.g2.com/discussions/how-much-is-twilio-flex)
- [What is twilio Flex?](https://www.g2.com/discussions/what-is-twilio-flex)
- [What is twilio flex used for?](https://www.g2.com/discussions/what-is-twilio-flex-used-for)

### [VoIP Phone Systems](https://www.g2.com/products/voip-phone-systems/reviews)

RingOffice is a cloud solutions provider for businesses of all sizes. We offer voice services like Cloud Phone Systems and SIP Trunking; as well as cloud IT and network services. We focus on reliability and ease to use, making communication, collaboration, and work easier for businesses. With over 20 years of experience, we know what it takes to provide quality cloud services that help businesses succeed.

**Average Rating:** 4.4/5.0

**Total Reviews:** 6

#### How Do G2 Users Rate VoIP Phone Systems?

- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.8/10)
- **Phone Calls:** 9.0/10 (Category avg: 9.1/10)
- **VOiP Number:** 9.3/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 9.0/10 (Category avg: 8.6/10)

#### Who Is the Company Behind VoIP Phone Systems?

- **Seller:** [RingOffice](https://www.g2.com/sellers/ringoffice)
- **Year Founded:** 2011
- **HQ Location:** Markham, CA
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c292d1f788c2800dab4dc33afba4d4e4b589e8deb2aac1f0e068814dcaa957e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fringoffice&secure%5Burl_type%5D=linkedin_company_website)  
12 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 50% Medium, 50% Small

#### What Do G2 Reviewers Say About VoIP Phone Systems?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **ease of use** of VoIP Phone Systems, noting their fast connectivity and user-friendly design.
- Users value the **easy communication** offered by VoIP Phone Systems, facilitating seamless conversations across countries.
- Users love the **easy connection** of VoIP Phone Systems, finding them fast and user-friendly to use.
- Users appreciate the **user-friendly** nature of VoIP Phone Systems, noting their ease of use and quick connectivity.

##### Cons

- Users often experience **laggy audio and voice issues** during internet disruptions, impacting communication quality.
- Users face **voice issues and lag** with VoIP systems during internet problems, affecting call quality significantly.

#### What Are Recent G2 Reviews of VoIP Phone Systems?

**["So Easy to use"](https://www.g2.com/survey_responses/voip-phone-systems-review-10261258)**

**Rating:** 4.5/5.0 stars

_— Davina K._

[Read full review](https://www.g2.com/survey_responses/voip-phone-systems-review-10261258)

**["VOIP Phone system review"](https://www.g2.com/survey_responses/voip-phone-systems-review-11283899)**

**Rating:** 5.0/5.0 stars

_— Satender Singh B._

[Read full review](https://www.g2.com/survey_responses/voip-phone-systems-review-11283899)

### [Avaya Unified Communications](https://www.g2.com/products/avaya-unified-communications/reviews)

Avaya Unified Communications (UC) is an integrated platform that consolidates multiple communication and collaboration channels into a single, cohesive system. Designed for modern enterprises, Avaya UC enables organizations to streamline communications across voice, video, messaging, and conferencing while supporting flexible work environments and seamless device mobility. Core Capabilities Avaya Unified Communications encompasses a comprehensive set of features including: Voice & Calling: VoIP, call forwarding, transfer, conferencing, and multi-line support Messaging & Presence: Instant messaging, presence awareness (showing who is available, busy, or offline), and SMS/fax capabilities Video Conferencing: Browser-based HD video conferencing with screen sharing, annotation tools, and personalized meeting rooms Collaboration: Team workspaces, calendar integration, contact management, and third-party application integration Deployment Models Avaya offers multiple UC solutions to suit different organizational needs: Avaya Cloud Office is a cloud-based Unified Communications as a Service (UCaaS) platform providing phones, apps, messaging, conferencing, video, and team meeting capabilities in a single, flexible offering. Available in Standard, Premium, and Ultimate subscription tiers, it delivers streamlined global management with minimal IT overhead. Avaya IP Office Subscription supports both traditional Telephony Users and advanced UC Users. UC Users gain mobility features including softphone applications, video calling, instant messaging, presence capabilities, and integrations with Salesforce, Outlook, and Microsoft Teams. Avaya Aura is a communications platform that can be deployed on-premises, in private cloud, or in hybrid configurations, providing a robust foundation for voice, video, messaging, and collaboration with integration for modern collaboration tools. Avaya Aura Private Cloud offers cloud-hosted UC bundles—Essentials, Advanced, and Ultra—with capabilities including telephony, voicemail, instant messaging, team conferencing, mobility, and seamless integration with Microsoft Teams and Zoom. Avaya Managed Services provides dedicated support for organizations seeking operational simplification, with tiered UC offerings and ongoing vendor management. Key Benefits Unified Experience: Single interface for all communication modes reduces context-switching and improves productivity Mobility: Work from anywhere with secure mobile access and multi-device call management Scalability: Solutions for small teams to large enterprises with flexible subscription and licensing models Integration: Seamless compatibility with Microsoft Teams, Zoom, Salesforce, and other business-critical applications Security: Enterprise-grade security with device enrollment, call detail recording, and compliance features Cost Efficiency: Cloud-based options reduce capital infrastructure investment and IT management overhead Summary Avaya Unified Communications serves organizations seeking modern, integrated communication platforms that support hybrid and remote work, reduce communication silos, and enable employees to collaborate effectively from any location. Whether deployed on-premises, in the cloud, or in hybrid configurations, Avaya UC provides the flexibility, reliability, and feature richness enterprises require.

**Average Rating:** 4.2/5.0

**Total Reviews:** 38

#### How Do G2 Users Rate Avaya Unified Communications?

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.8/10)
- **Phone Calls:** 8.3/10 (Category avg: 9.1/10)
- **VOiP Number:** 10.0/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 7.8/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Avaya Unified Communications?

- **Seller:** [Avaya](https://www.g2.com/sellers/avaya)
- **Year Founded:** 2000
- **HQ Location:** Morristown, NJ
- **Twitter:** @Avaya  
36,704 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=cb7b6b87b0fee52cbc9e0a2fcc8e720949ef23b4dac0afa2a3d3662f9753a20a&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1494%2F&secure%5Burl_type%5D=linkedin_company_website)  
11,775 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 60% Large, 24% Medium

#### What Do G2 Reviewers Say About Avaya Unified Communications?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **ease of implementation and intuitive interface** of Avaya Unified Communications, enhancing overall productivity.
- Users value the **effective communication** tools of Avaya UCaaS, enhancing connectivity through VoIP, messaging, and video features.
- Users love the **customizability** of Avaya UCaaS, enhancing communication through personalized features and seamless integration options.
- Users value the **extensive customization** options in Avaya UCaaS, enhancing their communication experience with tailored features.
- Users value the **easy implementation** of Avaya Unified Communications, enhancing user experience with intuitive handling.

##### Cons

- Users experience **call drops** and audio issues with Avaya Unified Communications, impacting communication quality significantly.
- Users face **connection issues** with Avaya, including dropped calls and audio quality inconsistencies affecting communication effectiveness.
- Users often face **audio issues** with Avaya, leading to dropped calls and interruptions during communication.
- Users report **audio problems** with Avaya, including dropped calls and glitches that disrupt communication quality.
- Users often face **call connectivity issues** , requiring careful configuration to prevent errors and call drops.

#### What Are Recent G2 Reviews of Avaya Unified Communications?

**["Crystal-Clear Calls with Flexible Call Settings"](https://www.g2.com/survey_responses/avaya-unified-communications-review-12316055)**

**Rating:** 5.0/5.0 stars

_— Jose Pablo P._

[Read full review](https://www.g2.com/survey_responses/avaya-unified-communications-review-12316055)

**["superb"](https://www.g2.com/survey_responses/avaya-unified-communications-review-3175470)**

**Rating:** 4.5/5.0 stars

_— Verified User in Banking_

[Read full review](https://www.g2.com/survey_responses/avaya-unified-communications-review-3175470)

### [Cytracom](https://www.g2.com/products/cytracom/reviews)

Cytracom provides enterprise-grade Hosted VoIP and unified communications to businesses nationwide.Cytracom's VoIP solutions provide cost savings, mobility, scalability and reliability with a platform built on the most advanced cloud-based VoIP technology in the world, .

**Average Rating:** 4.1/5.0

**Total Reviews:** 5

#### How Do G2 Users Rate Cytracom?

- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.8/10)
- **Phone Calls:** 7.8/10 (Category avg: 9.1/10)
- **VOiP Number:** 8.3/10 (Category avg: 9.0/10)
- **Desk-to-Desk Calls:** 8.3/10 (Category avg: 8.6/10)

#### Who Is the Company Behind Cytracom?

- **Seller:** [Cytracom](https://www.g2.com/sellers/cytracom)
- **Year Founded:** 2008
- **HQ Location:** McKinney, US
- **Twitter:** @cytracom  
458 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=473575f2aa7d2f76c6e99c6a9a65ca9052bef5205e8cc94703c72f186bf44e64&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcytracom-communications%2F&secure%5Burl_type%5D=linkedin_company_website)  
106 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 80% Small, 20% Large

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

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **exceptional support** from Cytracom, enhancing satisfaction with their overall service and technology.
- Users value the **exceptional customer service** from Cytracom, appreciating proactive support that enhances their experience.
- Users praise Cytracom for its **exceptional customer support** , exemplified by proactive assistance and responsiveness from the engineering team.
- Users appreciate the **exceptional support** from Cytracom, enhancing their overall satisfaction with the product and service.
- Users value the **exceptional support** from Cytracom, enhancing their overall experience and satisfaction with the product.

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

**["Works as intended"](https://www.g2.com/survey_responses/cytracom-review-7614787)**

**Rating:** 5.0/5.0 stars

_— Michael J b._

[Read full review](https://www.g2.com/survey_responses/cytracom-review-7614787)

**["Good Business Practices for ControlOne"](https://www.g2.com/survey_responses/cytracom-review-10963319)**

**Rating:** 4.5/5.0 stars

_— Scott B._

[Read full review](https://www.g2.com/survey_responses/cytracom-review-10963319)

#### What Are G2 Users Discussing About Cytracom?

- [Is there a free version of Cytracom?](https://www.g2.com/discussions/is-there-a-free-version-of-cytracom)
- [How do I setup my Cytracom phone?](https://www.g2.com/discussions/how-do-i-setup-my-cytracom-phone)
- [How do you use Cytracom?](https://www.g2.com/discussions/how-do-you-use-cytracom)
- [What does Cytracom do?](https://www.g2.com/discussions/what-does-cytracom-do)

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 ![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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