[Freeswitch-users] blf status stress testing

Hi, We have the problem that on different installations the blf keys in combination with yealink phones don’t always show the correct status, sometimes ringing or busy is not shown. The installations are relative small from 3 to 80 Phones. We still have the V72 Version of firmware on the phones and not all installations have the current 1.4.15 version of FreeSWITCH. I’m trying to build some kind of stress test environment to try to reproduce the issue do identify if the problem is resolved with the new phone firmware and FreeSWITCH version or to identify what is going wrong. Can someone recommend tools for stress testing the blf keys? Thank you, Raphael