Asterisk vs FreeSWITCH

Asterisk — Asterisk is an open source communications software that allows you to build telephony applications and services. It supports voice over IP, video conferencing, voicemail, auto attendant, interactive v

FreeSWITCH — FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice and chat driven products scaling from a softphone to a PBX and even up to an enterprise-class softswitch. I

Asterisk offers PBX functionality, VoIP, Interactive voice response, Voicemail, Conference calling, while FreeSWITCH provides Open source, Supports multiple protocols like SIP, WebRTC, PSTN, Scalable and modular architecture, APIs for call control and management, Audio codecs like G.711, G.722, G.729, Opus, Speex.

Asterisk stands out for Open source and free, Highly customizable, Supports many protocols and codecs; FreeSWITCH is known for Free and open source, Highly scalable and customizable, Supports wide range of use cases.

Feature	Asterisk	FreeSWITCH
Overall Score	N/A	N/A
Primary Category	Network & Admin	Network & Admin
Pricing	Open Source	Open Source

Product Overview

Asterisk

Description: Asterisk is an open source communications software that allows you to build telephony applications and services. It supports voice over IP, video conferencing, voicemail, auto attendant, interactive voice response, and more. It can be used to build PBX systems, call center solutions, and other communications platforms.

FreeSWITCH

Description: FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice and chat driven products scaling from a softphone to a PBX and even up to an enterprise-class softswitch. It can be used to power PBX solutions, voicemail services, conference calling, contact center solutions and more.

Key Features Comparison

Asterisk Features

• PBX functionality
• VoIP
• Interactive voice response
• Voicemail
• Conference calling
• Call routing
• Call queuing

FreeSWITCH Features

• Open source
• Supports multiple protocols like SIP, WebRTC, PSTN
• Scalable and modular architecture
• APIs for call control and management
• Audio codecs like G.711, G.722, G.729, Opus, Speex
• Video codecs like H.264, VP8
• Conference calling and bridging
• Call recording and monitoring
• IVR and text-to-speech capabilities
• Real-time call detail records

Pros & Cons Analysis

Asterisk

Pros

• Open source and free
• Highly customizable
• Supports many protocols and codecs
• Active development community
• Integrates with many CRM and business software

Cons

• Steep learning curve
• Requires technical expertise to setup and manage
• Limited official support
• Fragmented documentation
• Not as feature rich as proprietary PBX systems

FreeSWITCH

Pros

• Free and open source
• Highly scalable and customizable
• Supports wide range of use cases
• Active community support
• Available on multiple platforms

Cons

• Steep learning curve
• Requires expertise to setup and manage
• Limited built-in features compared to commercial PBXs
• Lacks polished admin interface

Pricing Comparison

Asterisk

• Open Source

FreeSWITCH

• Open Source