# VoIP Reviews **Vendor:** Sigma Telecom **Category:** [VoIP Providers](https://www.g2.com/categories/voip-providers) **Average Rating:** 4.6/5.0 **Total Reviews:** 5 ## About VoIP 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. ## VoIP Reviews ### 1. Great Improvement **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Banking | Small-Business (50 or fewer emp.) **Reviewed Date:** August 17, 2023 **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 **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. **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. ### 2. Consistency In Excellence of Service **Rating:** 5.0/5.0 stars **Reviewed by:** Chanel C. | Customer Service Team Lead, Small-Business (50 or fewer emp.) **Reviewed Date:** December 20, 2023 **What do you like best about VoIP?** It is an inexpensive option for small businesses, and easy to setup and use. **What do you dislike about VoIP?** I do not have anything I currently dislike about this platform. **What problems is VoIP solving and how is that benefiting you?** Ability to communicate with our customers. ### 3. Reliable tech for decades **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Fund-Raising | Mid-Market (51-1000 emp.) **Reviewed Date:** December 19, 2023 **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. **What do you dislike about VoIP?** Can be complicated to setup and maintain over time, compared to out of the box solutions. **What problems is VoIP solving and how is that benefiting you?** Communication is key, and VoIP is helping connect us both internally and externally. ### 4. Pain free co. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Real Estate | Small-Business (50 or fewer emp.) **Reviewed Date:** September 20, 2023 **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. **What do you dislike about VoIP?** I wish an acct rep would call in once in a while. **What problems is VoIP solving and how is that benefiting you?** Communication. ### 5. Vol **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Consulting | Mid-Market (51-1000 emp.) **Reviewed Date:** August 15, 2023 **What do you like best about VoIP?** It allows creativity while I have used it. **What do you dislike about VoIP?** It can fail in a moment notice when is very unhelpful. **What problems is VoIP solving and how is that benefiting you?** Talk to customers and help them overall - [View VoIP pricing details and edition comparison](https://www.g2.com/products/sigma-telecom-voip/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-29+14%3A21%3A15+-0500&secure%5Bsession_id%5D=9c9087af-bcb1-4291-b564-7674d3572e4f&secure%5Btoken%5D=6af78fb291a968ade005e40e8e71cd4bbee473a1d4b897dc6d4acbdf5ed2d916&format=llm_user) ## VoIP Features **Platform Basics - VoIP Providers** - PBX systems, VoIP Softphone - Call Management - Network monitoring - Integrations - Virtual PBX - SIP trunking services **Basic Communication** - Phone Calls - Video Calls - Instant Messaging - Screen Sharing - Conference Calls - Desk-to-Desk Calls **Agentic AI - VoIP Providers** - Autonomous Task Execution - Cross-system Integration - Adaptive Learning - Proactive Assistance **Access** - Software Pairing - Browser Extension - Individual Download **Advanced Features** - Hold Music - Automated Attendants - VOiP Number ## Top VoIP Alternatives - [KrispCall](https://www.g2.com/products/krispcall/reviews) - 4.5/5.0 (355 reviews) - [Webex Suite](https://www.g2.com/products/cisco-webex-suite/reviews) - 4.2/5.0 (17,643 reviews) - [Dialpad Connect](https://www.g2.com/products/dialpad-connect/reviews) - 4.4/5.0 (4,006 reviews)