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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 CALLR?

Cut down on the costs tied to your business communication system by choosing a pay-as-you-go model. Our vast international network provides direct routes that allow you to take advantage of discounts based on volume and usage. With our premium SIP and IAX services, you can enjoy features such as elastic trunking, instant provisioning, direct interconnections, and secure connections. No matter if your workforce includes 25 or 200 agents, we possess the knowledge to meet all your SIP enterprise needs for call termination and origination. CALLR proficiently handles the encoding and decoding of signals, supporting all major codecs in both directions to ensure high-quality communication. Our services integrate seamlessly with leading VoIP platforms like Asterisk, Freeswitch, Vicidial, and FreePBX. Whether your requirements are for outbound or inbound calling, we are ready to address all your telecommunication necessities. Our advanced routing system allows us to present competitive pricing that can greatly reduce your call expenses. Furthermore, our SIP and IAX network has a global reach, guaranteeing dependable service with local interconnection through strategically placed data centers aligned with your network's footprint. Elevate your communication experience with our all-inclusive solutions designed specifically for your business requirements, enabling you to operate more efficiently and effectively.

Media

Media

Integrations Supported

360 Monitoring
Apache Cassandra
Asterisk
Fonimo
FreeSWITCH
Google Analytics
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
PostgreSQL
Radius
Redis
Whaller
memcached

Integrations Supported

360 Monitoring
Apache Cassandra
Asterisk
Fonimo
FreeSWITCH
Google Analytics
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
PostgreSQL
Radius
Redis
Whaller
memcached

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

$1 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

CALLR

Date Founded

2010

Company Location

France

Company Website

callr.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

IVR

Call Center
Call Logging
Call Recording
Call Routing
Multiple Scripts
Phone Key Input
Survey Management
Text to Speech
Voice Customization
Voice Mail

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