Elastix vs Kamailio

Elastix — Elastix is an open source unified communications server software that combines IP PBX, email, IM, faxing, and collaboration features. It is built on top of free open source software like Asterisk, Hyl

Kamailio — Kamailio is an open source SIP server used for VoIP and real-time communications. It handles call routing, policy enforcement, media handling, accounting, and authorization with support for presence a

Elastix offers IP PBX for VoIP calls, Voicemail, Call conferencing, Call recording, Fax server, while Kamailio provides SIP proxy and registrar server, Presence and instant messaging, Load balancing and failover, NAT traversal, Media relaying.

Elastix stands out for Open source and free, Built on proven open source components like Asterisk, Supports a wide range of telephony features; Kamailio is known for Open source and free, Highly scalable and performant, Rich feature set for VoIP.

Feature	Elastix	Kamailio
Overall Score	N/A	N/A
Primary Category	Network & Admin	Social & Communications
Pricing	Open Source	Open Source

Product Overview

Elastix

Description: Elastix is an open source unified communications server software that combines IP PBX, email, IM, faxing, and collaboration features. It is built on top of free open source software like Asterisk, HylaFAX, Openfire, and Postfix.

Kamailio

Description: Kamailio is an open source SIP server used for VoIP and real-time communications. It handles call routing, policy enforcement, media handling, accounting, and authorization with support for presence and instant messaging.

Key Features Comparison

Elastix Features

• IP PBX for VoIP calls
• Voicemail
• Call conferencing
• Call recording
• Fax server
• Instant messaging
• Presence management
• Email server
• CRM integration

Kamailio Features

• SIP proxy and registrar server
• Presence and instant messaging
• Load balancing and failover
• NAT traversal
• Media relaying
• Accounting and billing
• Flexible routing and policy enforcement
• Modular architecture with extensive API

Pros & Cons Analysis

Elastix

Pros

• Open source and free
• Built on proven open source components like Asterisk
• Supports a wide range of telephony features
• Easy to install and manage
• Scalable for small to large deployments

Cons

• Limited official support options
• Requires technical expertise to setup and manage
• Not as feature rich as some commercial UC solutions
• Fragmented ecosystem of addons and integrations

Kamailio

Pros

• Open source and free
• Highly scalable and performant
• Rich feature set for VoIP
• Active community support
• Modular and customizable
• Supports wide range of SIP devices and clients

Cons

• Steep learning curve
• Requires expertise to setup and manage
• Not as user friendly as commercial options
• Limited official support and documentation

Pricing Comparison

Elastix

• Open Source

Kamailio

• Open Source