Kamailio dispatcher load balancing. In many cases SBC also provides NAT traversal and policy control features ( such as rate limiting , ACL etc ) . kamailio load balancing with dispatcher Asked 10 years, 9 months ago Modified 10 years, 8 months ago Viewed 2k times That’s where Kamailio comes into play—not just as a SIP proxy, but as a powerful SIP load balancer. . kamailio-Registrar-Dispatcher-with-asterisk-load-balancing Public Working kamailio with Multiple Asterisk server as a Media servers Including dispatcher & Registrar module 2 You have to take care of balancing the traffic among the IP addresses. The simplest way to set up load balancing is to use the dispatcher module. This particular configuration will Loadbalance not only INVITEs, but registrations too. The Dispatcher module in Kamailio offers SIP load balancer functionality and it can be used as a SIP traffic dispatcher. 5. 0. org/docs/modules/4. presented by Julien Chavanton, Lead VoIP Software Engineer, Flowroute, USA In this article, we will walk you through the process of scaling an Asterisk cluster using Kamailio and RTPProxy. video link in descriptionhttps://yo At this point, load balancing for Asterisk servers is OK: Asterisk cluster handles several thousand simultaneous calls without any problem, and if i want to have more calls, i "just" need to setup a new Asterisk server and set its IP address to Kamailio's dispatcher. It seems extension How can I divide all incoming traffic between 3 servers with the following information? I am configuring kamailio with 3 or more asterisk servers. 3:5060 1 sip:10. I configured dr_rules. To do this, I have set up the Openser server in front of it and I loaded and configured the dispatcher modules to do so. x/modules/dispatcher. The Kamailio dispatcher load balancing mechanism gives you control while keeping things lightweight and efficient. The module can be used as a stateless load balancer; it does not depend on any call Jun 19, 2025 · Blog Summary This blog introduces Kamailio as a SIP load balancer, explaining how it distributes traffic using the dispatcher module. From startups to telecom giants, teams rely on Kamailio load balancing to scale without hiccups. 2. 4:5060 Asterisk Load balancing and High Availability with Kamailio (OpenSER) Kamailio coupled with Asterisk are implemented in many huge installations. # kamctl dispatcher My scenario is: A SIP trunk is connected to a Kamailio server which is connected to multiple Asterisk servers locally and should load balance calls among these asterisk servers. The document provides an overview of load balancing in SIP (Session Initiation Protocol) environments, detailing the features and configurations of a dispatcher module that allows for traffic dispatching and high availability. Load Balancing Load Balancers - Kamailio Simple config file of Kamailio as Loadblancer for calls and registrations This is simple config for somebody who need to use Kamailio as Loadbalancer in front of Freeswitch or Asterisk. Working kamailio with Multiple Asterisk server as a Media servers Including dispatcher & Registrar module Feb 12, 2026 · Purpose and Scope This document describes the dispatcher role in Kamailio, which is responsible for routing SIP calls to FreeSWITCH media servers. The dispatcher role implements load balancing, failover, zone-aware routing, and call affinity to ensure reliable call delivery across a pool of media servers. When we are calling extension to extension it is showing in all the servers. However, if you restarted Kamailio since adding the dispatch route you can just use the following command to reload the dispatcher info. 1. SIREMIS Project - Kamailio (OpenSER) Web Management Interface by Asipto Among features: provides system and database administration tools for Kamailio (OpenSER) subscriber, database aliases and speed dial management location table view (online phones – registrations) presence services management sip trace records view and search dispatcher (load balancing), prefix-domain translation and Kamailio是一个开源的SIP服务器，原名OpenSER Kamailiois an Open Source, GPL2, SIP Server Routing Platform. With its efficient distribution of requests and ability to handle failures, Kamailio is a crucial component in ensuring the reliability and availability of communication networks. Jan 20, 2023 · The Dispatcher module in Kamailio offers SIP load balancer functionality and it can be used as a SIP traffic dispatcher. It describes various load balancing algorithms, including round-robin and priority-based methods, and includes examples of dispatcher configurations for both stateful I need to load balance incoming calls to asterisk. gwlist table on database. Since we haven’t restarted Kamailio since adding the dispatch route let’s just restart Kamailio using the same command as before. This module offers SIP load balancer functionality and it can be used as SIP traffic dispatcher. It describes various load balancing algorithms, including round-robin and priority-based methods, and includes examples of dispatcher configurations for both stateful WebRTC and SIP duration: two days understanding SIP understanding WebRTC Websockets SRTP Data Channels overview of JavaScript SIP libraries overview of Kamailio Websocket implementation SIP WebRTC calls through Kamailio hands-on exercises with Kamailio and JSSIP library The Dispatcher module provides SIP load balancing and traffic distribution capabilities for Kamailio. This is the tool to manage kamailio from command line, providing lots of operations, such as adding/removing/updating SIP users, controlling the ACL for users, managing the records for LCR or load balancing, viewing registered users and internal statistics, etc. Dispatcher Module - Load Balancing balancing algorithms call load distribution counting of active calls per destination address weight based distribution each destination address has assigned a weight (percentage) to it priority based distribution each destination address has assigned a priority to it (practically is same as serial forking) Dispatcher is the Kamailio module responsible for the load balancing which can be loaded by adding following line in kamailio. loadmodule “dispatcher. It is written in C for Linux/Unix plaforms and focuses on performance, flexibility and security. html - kamailio. Following configuration I Kamailio Load Balancing with Asterisk Servers | Kamailio Dispatcher [Load balance between Asterisk ] - YouTube Working kamailio with Multiple Asterisk server as a Media servers Including dispatcher & Registrar module - kamailio-asterisk/kamailio-Registrar-Dispatcher-with Implement Load Balancing and Failover: Use Kamailio's load balancing and failover features to distribute SIP traffic across multiple servers and ensure high availability and reliability. The module can be used as a stateless load balancer; it does not depend on any call state I want that the Kamailio server works as a load balancer and forwards the incoming calls to the asterisk servers (round robin). kamailio load balancing with dispatcher Asked 10 years, 9 months ago Modified 10 years, 8 months ago Viewed 2k times This article talks about possible ways of configuring a single Kamailio instance to provide these features. One of the most common use cases for dispatcher module is to load balance traffic between media servers such Asterisk or FreeSWITCH to implement High Available and Scalable Voice over IP solutions. How to make a round robin? Call 1 → Trunk A, Call2 → Trunk B, Call 3 → Trunk A, Call 4 → Trunk B Do you have idea? Thanks Overall, Kamailio's load balancing and high availability features make it a versatile and reliable solution for communication networks. Key security measures for SIP routing logic Dispatcher/load balancing Acting as a SIP proxy in front of media servers SIP Signaling Kamailio Load Balancing with Asterisk Servers | kamailio with multiple asterisk The Dispatcher module in Kamailio offers SIP load balancer functionality and it can be used as a SIP traffic dispatcher. 🔄 Why Use Kamailio for Load I am looking into using Kamailio for load balancing / redundancy across multiple unimrcp server services, but haven't found any specific examples of anyone doing this before, so would appreciate anyone's thoughts or direction towards that end. cfg WebRTC load balancing using Kamailio 5. It allows SIP requests to be distributed across multiple destinations using various algorithms and provides failover capabilities. Queue and voice mails are load balancing as well. This solution provides efficient load balancing of SIP calls and media traffic across multiple Asterisk nodes, allowing you to achieve improved performance and high availability for your VoIP infrastructure. Asterisk Load balancing and High Availability with Kamailio (OpenSER) Kamailio coupled with Asterisk are implemented in many huge installations. 4:5060 To support my channel: / omidmohajerani The Dispatcher module in Kamailio offers SIP load balancer functionality and it can be used as a SIP traffic dispatcher. OK but how do you share traffic among the IP addresses ? You need a kind of super load-balancer that load-balance traffic among Simple kamailio dispatcher config, taken from http://kamailio. cfg. One of the most common use cases for dispatcher module is to load balance traffic between media ser In many cases SBC also provides NAT traversal and policy control features ( such as rate limiting , ACL etc ) . Overall, Kamailio's load balancing and high availability features make it a versatile and reliable solution for communication networks. The document discusses the integration of Kamailio with Asterisk, highlighting Kamailio's roles such as a SIP proxy, registrar, and application server. There are many load balancing and traffic dispaching algorithms that you can choose from, for example: round-robin, weight based load balancing, call load distribution, and hashing over SIP message attributes. With its ultra-fast routing engine and scalability, it can handle thousands of call setups per second. list file should be set up like: # group sip addresses of your * units 1 sip:10. This module offers SIP load balancer functionality and it can be used as SIP traffic dispatcher. It emphasizes the advantages of using Kamailio for scaling, security, load balancing, and least cost routing, while also noting its limitations compared to Asterisk concerning media handling and call processing. so” Working kamailio with Multiple Asterisk server as a Media servers Including dispatcher & Registrar module This is a example configuration script of kamailio for load balance of multiple asterisk servers. md configure_kamailio. This module offers SIP load balancer and SIP traffic dispatcher functionalities. Configure dispatcher modules, set up health checks, and define routing policies to balance and manage traffic effectively. 📌 What is Kamailio? Kamailio is an open-source SIP server widely used in carrier-grade VoIP platforms. yml kamailio. It supports several different dispatching algorithms that you can choose from, for example: round-robin, weight based load balancing, call load distribution, and hashing over SIP message attributes. Simple config file of Kamailio as Loadblancer for calls and registrations - os11k/dispatcher Kamailio Bytes - User Agent Client (UAC) Kamailio Bytes - rtpengine Kamailio Bytes - xHTTP Kamailio Bytes: Adding Prometheus + Grafana to Kamailio README. The dispatcher. kamailio with Asterisk Servers load balancing with registrar and dispatcher GitHub link on youtube channel tech_himachali. There are many load balancing and traffic dispatching algorithms that you can choose from, for example: round-robin, weight based load balancing, call load distribution, and hashing over SIP message attributes. 它必须依赖内置的Dialog模块为它提供服务。 但是opensips load balancer和kamailio的dispatcher有个缺点，在面临多网卡时，不能象Opensips dispatcher那样指定某个网卡 也就是说，load balancer模块，不是只proxy过去就不管了，而是基于dialog过程获取你到底行不行的干预。 Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms - - kamailio/kamailio. Jul 29, 2025 · 🧭 Day 8: Load Balancing SIP Calls with Kamailio Dispatcher In a real-world CPaaS/UCaaS platform, your media servers (like FreeSWITCH) can’t live alone. GitHub Gist: instantly share code, notes, and snippets. m Proposed Components Kamailio – to provide load balancing and routing of calls to one or more Asterisk servers Asterisk – Media server Docker Consul – Will keep track of all Asterisk servers that are up and available The document provides an overview of load balancing in SIP (Session Initiation Protocol) environments, detailing the features and configurations of a dispatcher module that allows for traffic dispatching and high availability. c. I want to test it first with one asterisk server and if that works, I can add more for more performance. It covers key benefits, setup challenges, real-world examples, and future possibilities of Kamailio load balancing. With that completed, we’ll need to reload Kamailio. In advanced cases transcoding, topology concealment and load balancing is also achievable via a SBC such as Kamailio . Mar 12, 2023 · Let's explore Kamailio's load balancing capabilities provided by the dispatcher module, which includes support for different traffic balancing and distribution algorithms. It does not talk about distributing the signaling load among multiple proxy instances. Hi Team Vital PBX, I have 2 trunk providers (TrunkA & Trunk B). They need to scale. j2 Efficiently Scaling VoIP Infrastructure: Load Balancing SIP and RTP Traffic with Kamailio and RTPProxy Kamailio can help a FreeSWITCH deployment in three ways: 1) Using the DISPATCHER module for carrier and internal routing which provides load balancing and failover capabilities, 2) Using the PERMISSIONS module for IP-based access control lists for routing, registrations, and permissions, and 3) Using the HTABLE module for caching and storing data in-memory for improved performance and That’s where Kamailio comes into play—not just as a SIP proxy, but as a powerful SIP load balancer. 🔄 Why Use Kamailio for Load I want that the Kamailio server works as a load balancer and forwards the incoming calls to the asterisk servers (round robin). Please, keep in mind that this article talks about load balancing the calls to group of media servers. fttu7i, j2mr, nvygef, rbadu, m0sy, nzoqv, rv7if, qg4p9, slx9y, rsbd,