Isymphony not working

Failed to contact the iSymphony server.
Verify that your iSymphony server is installed and running and that the server API host and port are correct in the fields below. If you have SSL enabled below and are using the SSL port for the API connection you need to enable SSL in the iSymphony server's security.xml file for the communication_manager servlet

From CLI getting: 

[root@freepbx ~]# service isymphony restart
Redirecting to /bin/systemctl restart isymphony.service
Failed to restart isymphony.service: Unit not found.