[Freeswitch-users] Help needed with DSS/BLF LED on phones

Hi, I am trying to configure a programmable key on my SIP phone as DSS/BLF. The intention is to use this key to pickup calls from a pickup group. I also want the LED of the key to turn red when there is an active call in the pickup group. Right now, I can pickup the call fine with the pickup group, but LED is not working at all. Anybody knows what could be the problem. I tried 3 different phones and they all behave the same. Thanks, Varsha