--- title: VoIP Reviews meta\_title: 'VoIP Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how VoIP works for a business like yours. aggregate\_rating: rating\_value: 4.6 review\_count: 5 scale: '5' date\_modified: '2025-04-17' parent\_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # VoIP Reviews & Product Details Sigma Telecom was founded in 2003 to provide telecommunication infrastructure services. Today Sigma provides high-quality VOIP and software services to telecommunication operators, suppliers, and vendors worldwide. * * * Seller [Sigma Telecom](https://www.g2.com/sellers/sigma-telecom) Discussions [VoIP Community](https://www.g2.com/products/sigma-telecom-voip/discuss) Overview by Ayca Gulgun Show More ## Top-Rated Alternatives [ ![KrispCall](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "KrispCall") KrispCall 4.5/5(368) ](https://www.g2.com/products/krispcall/reviews) [ ![Webex Suite](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Webex Suite") Webex Suite 4.2/5(18,923) ](https://www.g2.com/products/cisco-webex-suite/reviews) [ ![Dialpad Connect](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Dialpad Connect") Dialpad Connect 4.4/5(4,201) ](https://www.g2.com/products/dialpad-connect/reviews) [ View All Alternatives ](https://www.g2.com/products/sigma-telecom-voip/competitors/alternatives) ## User Insights Average based on 5 real user reviews. [Log in to unlock pricing and user insights](/login) ![Verified User in Banking](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Banking") UB Verified User in Banking Small-Business (50 or fewer emp.) 8/17/2023 "Great Improvement" 4/5 What do you like best about VoIP? One of the most helpful things about VOIP is it's ease of use and the fact that you can add a list of contacts for those that you contact on a regular basis and then just click their name or # and dial Review collected by and hosted on G2.com. What do you dislike about VoIP? The only downside is that it if the internet is sluggish or down, then you have no VOIP, meaning no phone to make calls, unless you have backup hard landline, which most organizations do not. Review collected by and hosted on G2.com. What problems is VoIP solving and how is that benefiting you? VOIP solvs many problems. Not only do I use it to dial contacts and prospective clients, I can also send them a sms thru VOIP as well. It has so many more features now than it had just a few years ago. I can setup and look at reports for each user. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic Review from User Profile ![Chanel C.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Chanel C.") CC Chanel C. Customer Service Team Lead Small-Business (50 or fewer emp.) 12/20/2023 "Consistency In Excellence of Service" 5/5 What do you like best about VoIP? It is an inexpensive option for small businesses, and easy to setup and use. Review collected by and hosted on G2.com. What do you dislike about VoIP? I do not have anything I currently dislike about this platform. Review collected by and hosted on G2.com. What problems is VoIP solving and how is that benefiting you? Ability to communicate with our customers. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ![Verified User in Fund-Raising](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Fund-Raising") AF Verified User in Fund-Raising Mid-Market (51-1000 emp.) 12/19/2023 "Reliable tech for decades" 5/5 What do you like best about VoIP? Ability to customize a telephone system per company needs, with many routing options, extensions, auto-reception systems, etc. Review collected by and hosted on G2.com. What do you dislike about VoIP? Can be complicated to setup and maintain over time, compared to out of the box solutions. Review collected by and hosted on G2.com. What problems is VoIP solving and how is that benefiting you? Communication is key, and VoIP is helping connect us both internally and externally. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Real Estate](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Real Estate") UR Verified User in Real Estate Small-Business (50 or fewer emp.) 9/20/2023 "Pain free co." 5/5 What do you like best about VoIP? The technology is so good we have not had to call in for any reason (e.g. CS or tech supp) for years. Review collected by and hosted on G2.com. What do you dislike about VoIP? I wish an acct rep would call in once in a while. Review collected by and hosted on G2.com. What problems is VoIP solving and how is that benefiting you? Communication. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ![Verified User in Consulting](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Consulting") CC Verified User in Consulting Mid-Market (51-1000 emp.) 8/15/2023 "Vol" 4/5 What do you like best about VoIP? It allows creativity while I have used it. Review collected by and hosted on G2.com. What do you dislike about VoIP? It can fail in a moment notice when is very unhelpful. Review collected by and hosted on G2.com. What problems is VoIP solving and how is that benefiting you? Talk to customers and help them overall Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ##### Pricing Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more. 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