I have a freepbx system running for one of my client. He need a Wall Monitor for monitoring the calls , specifically Totall Calls in queue , Waiting Calls , Agent logged in. I am looking for a free and open source one.
The hard part here is the “Free”. iSymphony will do exactly what you are looking for however it is not a free solution. You can learn more about iSymphony at getisymphony.com
Tony is right, no out of the box solution exists for free.
FreePBX is open and you can change it to be however you likes. That is what integrators are supposed to do for their clients. Not get on boards trolling for more free software they can make money on.
If you don’t want to pay for the existing work product (iSymphony) then write your own. That is the power of Open Source.