---
description: Discover the benefits and disadvantages of Kolmisoft M4 SBC.  Learn the software price, see the description, and read the most helpful reviews for UK business users. 
image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress
title: Kolmisoft M4 SBC Pricing, Cost & Reviews - Capterra UK 2026
---

Breadcrumb: [Home](/) > [VoIP Software](/directory/30940/voip/software) > [Kolmisoft M4 SBC](/software/1059984/m4-sbc)

# Kolmisoft M4 SBC

Canonical: https://www.capterra.co.uk/software/1059984/m4-sbc

> M4 SBC is a Class 4 Softswitch that helps telecommunication service providers automate VoIP billing, routing, and invoicing processes.
> 
> Verdict: Rated \*\*\*\* by 0 users. Top-rated for **Overall Quality**.

-----

## Overview

### Who Uses Kolmisoft M4 SBC?

VoIP Service Providers who offer or want to offer these services: SIP trunking, DID management, Call origination and termination, Wholesale transit, A-Z routes, and selling CC (call center) traffic.

## About the vendor

- **Company**: Kolmisoft

## Commercial Context

- **Target Audience**: Self Employed, 2–10, 11–50, 51–200
- **Deployment & Platforms**: Cloud, SaaS, Web-based, Linux (Desktop), Linux (On-Premise)
- **Supported Languages**: English
- **Available Countries**: Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antigua & Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium and 209 more

## Features

- SIP Trunking
- VoIP

## Support Options

- FAQs/Forum
- Knowledge Base
- 24/7 (Live rep)

## Category

- [VoIP Software](https://www.capterra.co.uk/directory/30940/voip/software)

## Related Categories

- [VoIP Software](https://www.capterra.co.uk/directory/30940/voip/software)
- [Telephony Software](https://www.capterra.co.uk/directory/30084/telephony/software)
- [Billing and Invoicing Software](https://www.capterra.co.uk/directory/30015/billing-and-invoicing/software)

## Alternatives

1. [QuickBooks Online](https://www.capterra.co.uk/software/141374/quickbooks-online) — 4.3/5 (8393 reviews)
2. [Xero](https://www.capterra.co.uk/software/169561/xero) — 4.4/5 (3273 reviews)
3. [PayPal](https://www.capterra.co.uk/software/179251/paypal) — 4.6/5 (26301 reviews)
4. [Abby](https://www.capterra.co.uk/software/1036470/abby) — 4.7/5 (603 reviews)
5. [Bookipi](https://www.capterra.co.uk/software/195165/bookipi) — 4.8/5 (176 reviews)

## Links

- [View on Capterra](https://www.capterra.co.uk/software/1059984/m4-sbc)

## This page is available in the following languages

| Locale | URL |
| en | <https://www.capterra.com/p/10015596/M4-SBC/> |
| en-AE | <https://www.capterra.ae/software/1059984/m4-sbc> |
| en-AU | <https://www.capterra.com.au/software/1059984/m4-sbc> |
| en-CA | <https://www.capterra.ca/software/1059984/m4-sbc> |
| en-GB | <https://www.capterra.co.uk/software/1059984/m4-sbc> |
| en-IE | <https://www.capterra.ie/software/1059984/m4-sbc> |
| en-IL | <https://www.capterra.co.il/software/1059984/m4-sbc> |
| en-IN | <https://www.capterra.in/software/1059984/m4-sbc> |
| en-NZ | <https://www.capterra.co.nz/software/1059984/m4-sbc> |
| en-SG | <https://www.capterra.com.sg/software/1059984/m4-sbc> |
| en-ZA | <https://www.capterra.co.za/software/1059984/m4-sbc> |

-----

## Structured Data

<script type="application/ld+json">
  {"@context":"https://schema.org","@graph":[{"name":"Capterra UK","address":{"@type":"PostalAddress","addressLocality":"Egham","addressRegion":"ENG","postalCode":"TW20 9AH","streetAddress":"Tamesis, The Glanty, Staines-upon-Thames Egham TW20 9AH United Kingdom"},"description":"Capterra UK helps millions of people find the best business software. With software reviews, ratings, infographics, and the most comprehensive list of business software.","email":"info@capterra.co.uk","url":"https://www.capterra.co.uk/","logo":"https://dm-localsites-assets-prod.imgix.net/images/capterra/logo-a9b3b18653bd44e574e5108c22ab4d3c.svg","@id":"https://www.capterra.co.uk/#organization","@type":"Organization","parentOrganization":"Gartner, Inc.","sameAs":["https://twitter.com/Capterra","https://www.facebook.com/Capterra/","https://www.linkedin.com/company/capterra/","https://www.youtube.com/channel/UCEt7vQSPiPlPAblHdhJAqnA"]},{"name":"Kolmisoft M4 SBC","description":"M4 SBC is a Class 4 Softswitch with in-built billing, intelligent routing, DID management, and switching (transcoding) functionality. \n\nTelecommunication 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.\n\nM4 can be used for these business models: SIP trunking, call origination and termination, wholesale transit, A-Z routes, and selling CC (call center) traffic.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/3c22f4ea-e038-4f40-804c-724be3bfb4e3.jpeg","url":"https://www.capterra.co.uk/software/1059984/m4-sbc","@id":"https://www.capterra.co.uk/software/1059984/m4-sbc#software","@type":"SoftwareApplication","publisher":{"@id":"https://www.capterra.co.uk/#organization"},"applicationCategory":"BusinessApplication","operatingSystem":"Cloud, Linux, Linux on premise"},{"@id":"https://www.capterra.co.uk/software/1059984/m4-sbc#faqs","@type":"FAQPage","mainEntity":[{"name":"What is Kolmisoft M4 SBC?","@type":"Question","acceptedAnswer":{"text":"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.","@type":"Answer"}},{"name":"Who Uses Kolmisoft M4 SBC?","@type":"Question","acceptedAnswer":{"text":"VoIP Service Providers who offer or want to offer these services: SIP trunking, DID management, Call origination and termination, Wholesale transit, A-Z routes, and selling CC (call center) traffic.","@type":"Answer"}}]},{"@id":"https://www.capterra.co.uk/software/1059984/m4-sbc#breadcrumblist","@type":"BreadcrumbList","itemListElement":[{"name":"Home","position":1,"item":"/","@type":"ListItem"},{"name":"VoIP Software","position":2,"item":"/directory/30940/voip/software","@type":"ListItem"},{"name":"Kolmisoft M4 SBC","position":3,"item":"/software/1059984/m4-sbc","@type":"ListItem"}]}]}
</script>