How to install Kamailio? [Kamailio 5.6 on Debian 11]

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Kamailio® is an Open Source SIP Server able to handle thousands of call setups per second.
Kamailio can be used to build large platforms for VoIP and Realtime communications - presence, WebRTC, Instant messaging and other applications.
it can be easily used for scaling PBX systems or media servers like Asterisk™or FreeSWITCH™
This is actually one of the most common use cases of Kamailio to work as load balancers for Asterisk or FreeSWITCH servers . This will let us implement high available and scalable PBX Systems.
In this video I had quick introduction about Kamailio, introduce some resources that I think they are useful for learning Kamailio and I have explained the steps to install Kamailio with MYSQL backend integration.
Link to My Github: github.com/Omid-Mohajerani
Disclaimer. : Kamailio has over 250 Modules that in video I said 150 .. Im Not sure why? I meant 250 in my mind :)

[@RicardoVargasM]

Great video my friend, so useful.

[@omidmohajerani]

Thanks

[@Sheidaee]

great video and explanation.thank you

[@omidmohajerani]

Thank you,

[@romansyrtlanov9088]

Hello, Omid. Do you have plans to make more videos about Kamailio & RTPEngine ?

[@omidmohajerani]

Hello Roman, Yes I will do as got more time to spend on videos.

[@krishd12]

Great Video. Can you please advise on how we can configure a SIP trunk from Telco to Kamailio? Thank you

[@omidmohajerani]

Usually SIP trunk provides allow you to define an IP and they will accept SIP invites without registration. But if the restrict to registration method then you can use Kamailio UAC module to register.

[@saidmaroc8448]

thanks Homid

[@omidmohajerani]

👍

[@amrhegazy7221]

thank you Eng.Omid could you please show differ between opensips and kamailio , which one is easier to learn and have powerful modules .

[@omidmohajerani]

Thank you for your comment. Im not the right person to answer this because my knowledge in OPENSIPS is very limited and I have used it actually in production. I dont have knowledge to compare them.

[@amrhegazy7221]

@Omid Mohajerani ok , but did you know which one is easiest, though learning path?

[@omidmohajerani]

@@amrhegazy7221 they are mostly the same . The syntax etc . So learning curve is somehow the same and if you know sip its not hard to learn. I could find more documents on kamailio thats why i chose that.

[@amrhegazy7221]

@Omid Mohajerani thanks, we will waiting for more information about kamailio

[@muhammadramizuabhalim1594]

Thanks for video Omid May I know, what is the major different between Asterisk and Kamailio? As you mention, the Kamailio can handle thousand of call and how about Asterisk? Which one better?

[@omidmohajerani]

Hi Mizu. Kamailio is for large scale voip implementation . Its just a SIP Server and it does not understand RTP and you need additional softwares to manage RTP. Asteirsk is a Back to Back User Agent and it can handle both SIP and RTP . In another word Asterisk can not be replaced just by Kamailio. But Why do we use Kamailio and Where we use it . Imagine you are a cloud provider that you want to handle 10,000 Calls or more . Can u use asterisk? Yes but not one Asterisk . You need multiple Asterisk Servers as each asterisk application can hardly handle 1500 call setups per seconds. But if you have multiple Asterisk Servers How do you want to create users in All of them ? or do you create 10 Servers each of them 1000 calls ? Then how do you design if User 1 wants to call user 1001 ? Do you create a sip trunk between them? IF one of the Asterisk Servers goes down you will loose 1000 calls right ? So these are all the problems that you will encounter when you want to design a large VoIP Network . Kamailio is to right Answer to solving these problems . For example with Kamailio and RTPEngine you can implement a VoIP Network that easily supports 100,000 Users and if any of Servers Goes down nothing happens even to live Calls .

[@airsay]

@@omidmohajerani so essentially, it plays the role of an SBC

[@omidmohajerani]

@@airsay Yes, It can play the role of an SBC as well ( not alone but with the help of other packages). Check SBCOS link here: github.com/voiceboys/sbcOS which is based on Kamailio + other required components.

[@AriannaEuryaleMusic]

I have to try this... I have been using ISSABEL

[@omidmohajerani]

Kamailio is not a Back-to-Back User Agent . You can not replace your issable easily with Kamailio as they have different usage. Kamailio does not underestand RTP and you need to use additional packages such as rtpengine to handle RTP . What make sense is to use Kamailio as LoadBalancer infront of your issable servers to implement High Availability .

[@AriannaEuryaleMusic]

@@omidmohajerani Oh Ok!, good to know that, Thank you!.

[@puviarasue6795]

Do we need kamailio db(Mariadb) if in case I need to use only Kamailio as SIP Proxy?

[@omidmohajerani]

No. The database is needed if you don't want to use modules that are using db.

[@puviarasue6795]

Thank you. How do we know those modules that required db

[@omidmohajerani]

@@puviarasue6795 when you want to use that module you can check Kamailio documentation. just google kamialio + module name and in the documentation, its states what is required. a lot of modules can be set up with or without a database connection.

[@puviarasue6795]

@@omidmohajerani thank you again.

[@omidmohajerani]

@@puviarasue6795 👍thanks and goodluck.

[@FivElement59]

ERROR on wget = Tunnel is Broken :'C help!

[@omidmohajerani]

wget just downloads the package .