--- title: "Kolmisoft M4 SBC Software Pricing, Alternatives & More 2026 | Capterra" description: "With the help of Capterra, learn about Kolmisoft M4 SBC Software - reviews, pricing plans, popular comparisons to other Billing and Invoicing products and more." source_url: "https://www.capterra.com/p/10015596/M4-SBC/" page_type: "product" language: "en" --- # Kolmisoft M4 SBC Software Review 2026: Features, Reviews, Integrations, Pros & Cons Last updated on August 20, 2026 Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Description](#description)[Use cases](#use-cases)[Alternatives](#alternatives)[FAQs](#faqs)[Features](#features)[Pricing](#pricing)[Support](#support) Kolmisoft M4 SBC ## What is Kolmisoft M4 SBC? M4 SBC is a Class 4 Softswitch with in-built billing, intelligent routing, DID management, and switching (transcoding) functionality. Telecommunication service providers use M4 to grow their voice business by automating their key operations, such as billing, routing, rate management, reporting, invoicing, and integrations through API. M4 can be used for these business models: SIP trunking, call origination and termination, wholesale transit, A-Z routes, and selling CC (call center) traffic. ## What is Kolmisoft M4 SBC used for? [VoIP](https://www.capterra.com/voip-software/)[Telephony](https://www.capterra.com/telephony-software/)[Billing and Invoicing](https://www.capterra.com/billing-and-invoicing-software/) Top alternative Featured Overall rating Based on 0 user reviews Reviews sentiment Positive \- Neutral \- Negative \- ### Starting price Free trial not available Capterra Shortlist charts the highest-rated and most popular products... Our "Best of" badge program showcases products with the highest ratings... Our "Best of" badge program showcases products with the highest ratings... Do you work for Kolmisoft M4 SBC?[Manage this product listing](https://www.g2.com/products/kolmisoft-m4-sbc/claim_requests/new?auto=true) ## Kolmisoft M4 SBC Overview Updated August 2026 AI summary Kolmisoft M4 SBC is a cloud and web-based solution for small businesses managing VoIP, telephony, and billing workflows. It enables online invoicing, invoice creation, and access to invoice history, with multi-currency support, projections, and API integration for added flexibility. Designed for companies providing voice communications, it supports essential billing alongside SIP trunking and call routing. ## Compare with a popular alternative Capterra selects software alternatives based on relevant features, verified user reviews and user interactions. Placement may be influenced by client status. ### Kolmisoft M4 SBC 0.0 VS. [4.9 (4,881)](https://www.capterra.com/p/172127/Rippling/reviews/) Starting Price Contact vendor Starting Price $8 Per User, Per Month Free Trial Free Version Pricing Options Free Trial Free Version Ease Of Use 0.0 (0) Ease Of Use 4.9 (973) Value For Money 0.0 (0) Value For Money 4.8 (796) Customer Service 0.0 (0) Customer Service 4.7 (768) ## Kolmisoft M4 SBC alternatives [4.6 (1,486)](https://www.capterra.com/p/127994/Jobber/reviews/) Starting price $39.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 93% of reviewers rated it above 4 stars [4.4 (3,329)](https://www.capterra.com/p/120109/Xero/reviews/) Starting price $25.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 88% of reviewers rated it above 4 stars [4.6 (498)](https://www.capterra.com/p/153475/FieldPulse/reviews/) Starting price Contact vendor for pricing Pricing Options Free Trial Free Version User Rating 93% of reviewers rated it above 4 stars [4.3 (717)](https://www.capterra.com/p/76/Intacct/reviews/) Starting price Contact vendor for pricing Pricing Options Free Trial Free Version User Rating 86% of reviewers rated it above 4 stars ## FAQs about Kolmisoft M4 SBC Overview ### What company size and specific industries is Kolmisoft M4 SBC built for? Kolmisoft M4 SBC is designed for VoIP service providers of any company size that work in voice communications and telecom services. It fits businesses offering SIP trunking, DID management, call origination and termination, wholesale transit, A-Z routes, and call center traffic sales. Features and Usability ### What are the key features of Kolmisoft M4 SBC? Kolmisoft M4 SBC offers SIP Trunking and VoIP for call routing and voice traffic handling, plus API access for system integration. It also includes Monitoring for activity oversight, Multi-Currency support for billing across currencies, Projections for planning, and invoicing features such as Invoice Creation, Invoice History, and Online Invoicing. Getting Started and Support ### What training and onboarding options does Kolmisoft M4 SBC offer? Kolmisoft M4 SBC provides webinars, documentation, and videos to help teams get started. Webinars support live or scheduled guidance, documentation offers written reference for setup and features, and videos provide visual walkthroughs for reviewing steps at any time. Getting Started and Support ### What customer support options does Kolmisoft M4 SBC offer? Kolmisoft M4 SBC provides FAQ/forum access, a knowledge base, and 24/7 live rep support. These channels give users self-service help and direct assistance at any time. No reviewer sentiment about support quality is available, so no claims can be made about response times, helpfulness, or common frustrations. ## Features AI summary Based on 16,388 Billing and Invoicing reviews Not all Billing and Invoicing products cover every must-have feature. Here is what reviewers flag as essential when choosing a solution: - **Invoice Processing** (**53%** of reviewers rated this feature as critical) - **Invoice Creation** (**55%**) - **Quotes/Estimates** (**55%**) Kolmisoft M4 SBC includes **Invoice Creation**, which helps businesses generate bills accurately and keep billing workflows moving. However, it does not include **Invoice Processing** or **Quotes/Estimates**. Instead, it offers **Online Invoicing** (**51%**) and **Invoice History** (**44%**), giving teams useful tools for sending invoices digitally and reviewing past billing records. These features help businesses maintain visibility into invoicing activity and support more consistent billing operations. API Application programming interface that allows for integration with other systems/databases Invoice Creation Create invoices from scratch or have recurring invoices Invoice History Store and view prior invoices for each account/client Monitoring Observe and track the demand, usage, progress or quality of a system, product, or user Multi-Currency Manage and handle various international currencies Online Invoicing Create, send, and view electronic invoices Kolmisoft M4 SBC 8 features ### All Features - API: Application programming interface that allows for integration with other systems/databases - Invoice Creation: Create invoices from scratch or have recurring invoices - Invoice History: Store and view prior invoices for each account/client - Monitoring: Observe and track the demand, usage, progress or quality of a system, product, or user - Multi-Currency: Manage and handle various international currencies - Online Invoicing: Create, send, and view electronic invoices - Projections: Estimate or forecast of a future scenario based on the study of present trends - SIP Trunking: Enables the connectivity to send and receive calls over the internet --- Get Advice We can help you find the software with the features you need. ## Pricing ### Starting price Free trial not available Connect with a Capterra advisor for a free 15-minute consultation Get a personalized software list aligned to your business needs with guidance from our expert advisors. Our team has helped 1 million+ businesses like yours find options that fit their needs. ## Support, customer service and training options Support - Email/Help Desk - FAQs/Forum - Knowledge Base - Phone Support - 24/7 (Live rep) - Chat Training - In Person - Live Online - Webinars - Documentation - Videos Deployment - Web - Android - iPhone/iPad Typical users - Freelancers - Small businesses - Mid size businesses - Enterprises ## Top-rated software of 2026 ### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox.