---
title: Kolmisoft M4 SBC Reviews
meta_title: 'Kolmisoft M4 SBC Reviews 2026: Details, Pricing, & Features | G2'
meta_description: Filter reviews by the users' company size, role or industry to find
  out how Kolmisoft M4 SBC works for a business like yours.
date_modified: '2026-01-20'
parent_category:
  name: Collaboration & Productivity
  url: https://www.g2.com/categories/collaboration-productivity
---


# Kolmisoft M4 SBC Reviews
**Vendor:** Kolmisoft  
**Category:** [VoIP Providers](https://www.g2.com/categories/voip-providers)
## About 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.






- [View Kolmisoft M4 SBC pricing details and edition comparison](https://www.g2.com/products/kolmisoft-m4-sbc/reviews?qs=pros-and-cons&section=pricing&secure%5Bexpires_at%5D=2026-08-07+20%3A38%3A40+-0500&secure%5Bsession_id%5D=8e94e395-33fe-4c87-ad6d-1fb95ff3420c&secure%5Btoken%5D=aa001466a4a56ec575692310f3aebf370d0d46f89445a2ceb9c27e02c54bcd06&format=llm_user)

## Kolmisoft M4 SBC Features
**Additional Functionality**
- Third-Party Integrations
- To-Do List
- @mentions
- Single Sign On
- File Management
- Activity Dashboard
- Drag & Drop
- Alerts/Notifications
- Prioritization
- Access Controls/Permissions
- Screen Sharing
- Content Management
- Brainstorming
- AI Copilot
- File Transfer
- Calendar Management
- Status Tracking
- Real-Time Notifications
- Version Control
- Task Management
- Activity Tracking
- Real Time Editing
- Communication Management
- Chat/Messaging
- Tagging
- Generative AI
- Assignment Management
- Task Scheduling
- Project Management
- Collaboration Tools
- Workflow Management
- Secure Data Storage
- File Sharing
- Document Storage
- Task Progress Tracking
- Discussions/Forums
- Commenting/Notes
- Reporting & Statistics
- Contact Management
- Video Conferencing
- Progress Tracking
- Mobile Access
- API
- Document Management
- Customizable Branding

**Platform Basics - VoIP Providers**
- PBX systems, VoIP Softphone
- Call Management
- Network monitoring
- Integrations
- Virtual PBX
- SIP trunking services
- Contact Management
- Communication Management
- Fax Management
- Call List Management
- Call Center Management
- Queue Management
- Third-Party Integrations
- Computer Telephony Integration
- Real-Time Monitoring
- Call Monitoring
- Workflow Management
- Call Center Integration

**Basic Communication**
- Phone Calls
- Video Calls
- Instant Messaging
- Screen Sharing
- Conference Calls
- Desk-to-Desk Calls
- SMS Messaging
- Chat/Messaging
- Video Call Recording
- Two-Way Audio & Video
- SIP Trunking

**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

**Additional Functionality**
- Live Chat
- Multi-Channel Communication
- Customizable Reports
- Call Tracking
- Automatic Call Distribution
- Real-Time Data
- Purchasing & Receiving
- Employee Directory
- AI Copilot
- Activity Tracking
- Collaboration Tools
- Call Scripting
- Real-Time Reporting
- Call Recording
- Real-Time Analytics
- Virtual Call Center
- Activity Dashboard
- Reporting & Statistics
- CRM
- Auto-Dialer
- Generative AI
- Contact Database
- Call Transfer
- Call Reporting
- Call Logging
- Voice Mail
- Caller ID
- Customizable Caller ID
- Mobile Access
- Callback Scheduling
- IVR
- API
- Interaction Tracking
- Call Routing
- Alerts/Notifications
- Video Conferencing
- Call Conferencing
- Call Disposition
- Predictive Dialer
- Spam Blocker
- On-Demand Recording
- Caller Profiles
- Multiple User Accounts
- VoIP Connection
- Conferencing
- Text to Speech
- Reporting/Analytics
- VoIP
- Call Queues
- Call Screening
- Access Controls/Permissions
- Online Voice Transmission
- Unified Communications
- Voicemail Transcription

## Top Kolmisoft M4 SBC Alternatives
  - [Webex Suite](https://www.g2.com/products/cisco-webex-suite/reviews) - 4.2/5.0 (17,667 reviews)
  - [Dialpad Connect](https://www.g2.com/products/dialpad-connect/reviews) - 4.4/5.0 (4,037 reviews)
  - [Nextiva](https://www.g2.com/products/nextiva/reviews) - 4.5/5.0 (3,577 reviews)