iSymphony is a call management system that is included in all FreePBX distributions. It consists of a server-side program and a Java ( iSymphony V 2.x) or web-based (iSymphony V 3.x) management console. While iSymphony provides a lot of functions and features for your PBX, not everyone uses it.

If you are not using iSymphony, it’s very easy to stop the server side component and free up the resources (mostly memory) that it uses. To stop iSymphony you would ssh into your PBX (as root) and issues the following commands:

Version 2:

service iSymphonyServer stop

chkconfig iSymphonyServer off

Version 3:

service iSymphonyServerV3 stop

chkconfig iSymphonyServerV3 off

The first command stops iSymphony and the second command stops it from restarting on a server reboot.

If you later decide you wish to use iSymphony, the process is easy to reverse:

service iSymphonyServer start

chkconfig iSymphonyServer on

Version 3:

service iSymphonyServerV3 start

chkconfig iSymphonyServerV3 on

Not sure what version your PBX is running? Here are a few ways you can tell:

  • If you are on FreePBX 5.211.65 or less it’s iSymphyony V2 by default
  • If you are on FreePBX 6.12.65 or greater it’s iSymphony V3
  • If you access your PBX control panel (the 1st page) and you see ISymphony. You are running V2
  • If you access your PBX control panel (the 1st page) and you see ISymphony V3. You are running V3

If you need any assistance stopping or starting iSymphony on your PBX please feel free to open a support ticket by sending an email to with your IP address and issue/concern. One of our engineers will review your ticket and reply with additional information.