yealink blf

There is some yealink phones with BLF led feature, but led lights working wrong, the lights changing (red on the call, green on idle) with big delays ~3-10 min!!, or not working at all. Calls is working great, and in FPBX "active calls" updateing great without any dealys. What can I...

If I transfer a call to ring group, and no one on that ring group picks up, I can then press that ring groups blf key on my SPA 500 series phones and pick the call back up On Yealink, it won't allow me to do that. If I press the ring groups BLF key on the yealink T29G, it hangs up the call...