I've been trying to make my Yealink phone to give BLF indications but I haven't been able to achieve this successfully yet so I need some expert advise here.

My Yealink phone, as soon as it registers to Asterisk, gives me BLF lights. The same phone registering to Kamailio sends SUBSCRIBE and nothing happens.

The Presence Handling is enabled in configurations and yet no dialog-info+xml NOTIFY is received.

Please help.

Best Regards,

Sammy Go.