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What is Kamailio?

Kamailio® is a powerful open-source SIP server that emerged from the earlier versions of OpenSER and SER, and is released under GPLv2+, designed to efficiently handle thousands of call setups per second. This versatile platform is ideal for building large-scale VoIP systems, facilitating real-time communication, managing presence, supporting WebRTC, enabling instant messaging, and accommodating numerous other applications. Moreover, Kamailio excels in scaling SIP-to-PSTN gateways, PBX systems, and media servers, such as Asterisk™, FreeSWITCH™, or SEMS, with remarkable ease. Its rich feature set encompasses support for asynchronous protocols like TCP, UDP, and SCTP, ensuring secure communication through TLS for voice, video, and text, in addition to compatibility with WebSockets for WebRTC. The server also fully supports both IPv4 and IPv6, offers straightforward instant messaging and presence functionalities via an integrated XCAP server and MSRP relay, and facilitates asynchronous operations effortlessly. Additionally, it includes IMS extensions for VoLTE, ENUM capabilities, along with features for DID and least cost routing, load balancing, and routing failover to enhance reliability. Kamailio's comprehensive suite of accounting, authentication, and authorization features ensures robust security, while it seamlessly integrates with a variety of backend systems such as MySQL, Postgres, Oracle, Radius, LDAP, Redis, Cassandra, MongoDB, and Memcached. With all these advanced capabilities, Kamailio stands out as a highly adaptable solution for contemporary communication infrastructures, making it a preferred choice among developers and organizations alike.

What is FusionPBX?

FusionPBX acts as a multifaceted solution suitable for both single and multi-tenant PBX configurations, functioning effectively as a carrier-grade switch, call center system, fax server, VoIP server, voicemail server, conference server, and voice application server, among various other functions. In contrast, FreeSWITCHâ„¢ is recognized for its flexibility and scalability, operating seamlessly across multiple threads and platforms. It offers a rich set of features, such as unlimited extensions, voicemail-to-email, music on hold, call parking, call center functions, call queues, and phone provisioning, making it ideal for businesses of varying sizes. By providing enterprise-grade phone system capabilities, it effectively addresses the diverse requirements of small, medium, and large organizations alike. Considerable resources have been dedicated to bolstering security, addressing technical issues, and enhancing the codebase. In addition, there are continuous improvements underway in anticipation of a forthcoming release, with the master branch exhibiting advancements that surpass the current version in multiple areas. As the team diligently finalizes critical updates, excitement builds regarding the forthcoming enhancements, which promise to elevate user experience. This dedication to ongoing enhancement is a testament to the platform's commitment to staying competitive and relevant amid the fast-paced changes in the telecommunication industry, ensuring it meets the ever-evolving demands of its users.

Media

Media

Integrations Supported

PostgreSQL
360 Monitoring
Apache Cassandra
Asterisk
CentOS
DIDforSale
Debian
Fonimo
FreeBSD
ICTBroadcast
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
Radius
Raspberry Pi OS
Redis
SQLite
Ubuntu
memcached

Integrations Supported

PostgreSQL
360 Monitoring
Apache Cassandra
Asterisk
CentOS
DIDforSale
Debian
Fonimo
FreeBSD
ICTBroadcast
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
Radius
Raspberry Pi OS
Redis
SQLite
Ubuntu
memcached

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

$100 per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Kamailio

Date Founded

2001

Company Location

United States

Company Website

www.kamailio.org/w/

Company Facts

Organization Name

FusionPBX

Company Location

United States

Company Website

www.fusionpbx.com

Categories and Features

PBX

Telephony

Auto-Dialer
Call Center Management
Call Monitoring
Contact Management
IVR / Voice Recognition
Inbound Reporting
Outbound Reporting
Predictive Dialer
Telemarketing Management
VoIP
Voice & Data Integration

Categories and Features

PBX

Telephony

Auto-Dialer
Call Center Management
Call Monitoring
Contact Management
IVR / Voice Recognition
Inbound Reporting
Outbound Reporting
Predictive Dialer
Telemarketing Management
VoIP
Voice & Data Integration

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