How to load balance inbound calls to multple Asterisk server

[santhuarnold]

Hi.

Cluster environment. 1 database server, 3 Asterisk servers and Single Sip line.
how to share or load balance the incoming calls to all 3 asterisk servers.



Vicibox-6.0.4: VERSION: 2.14-679a : BUILD: 180618-2300

[dgroth02]

To clarify - do you mean sort the load so that calls come in from the carrier and are spread across agents on different servers or just have the calls come in to different servers?

Typically inbound call routing by IP address is handled on the carrier side.

[mflorell]

On our VICIhost platform we use OpenSIPs servers to do this, so we can distribute inbound calls to all available Asterisk servers on a specific client's cluster. We've also helped several premise clients set up systems like this.

[santhuarnold]

without OpenSIPs cant we achieve this?
By selecting server Ip to all server(0.0.0.0) in carrier setting?

[mflorell]

It depends on what your carrier is capable of. Most inbound carriers are not able to load balance like that, but some are able to.

[santhuarnold]

only solution, need to use OpenSip kind of sip load balance? or anything in asterisk or vicidial level.

[richmac2018]

You can use this code in your asterisk gateway and just add callerid variable on that code.

exten => _9X.,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _9X.,2,NoOp(LB IS ${lb_trunk})
exten => _9X.,3,GotoIf($[${lb_trunk} != 0]?10)
exten => _9X.,4,Set(GLOBAL(lb_trunk)=1)
exten => _9X.,5,Dial(${trunk_1}/${EXTEN:1},,tTor)

exten => _9X.,10,GotoIf($[${lb_trunk} != 1]?20)
exten => _9X.,11,Set(GLOBAL(lb_trunk)=2)
exten => _9X.,12,Dial(${trunk_2}/${EXTEN:1},,tTor)

exten => _9X.,20,GotoIf($[${lb_trunk} != 2]?30)
exten => _9X.,21,Set(GLOBAL(lb_trunk)=3)
exten => _9X.,22,Dial(${trunk_3}/${EXTEN:1},,tTor)

exten => _9X.,30,Set(GLOBAL(lb_trunk)=0)
exten => _9X.,31,Goto(1)

[Kumba]

That last line should be changed to:

exten => _9X.,31,Goto(2)


You've already logged the call in the AGI and re-doing that will not help in any way, just delay processing as the AGI is called twice in a row hitting the database twice and create unnecessary load.