Question
BLF (Busy Lamp Field) DTMF Tone Customization
Hello, I would like to set up a BLF on our Yealink phones so users can join or leave a call Queue. I see a basic list of DTMF tones in the following article; however, I can't find any mention of what the DTMF tone would be to activate this on the phone.
I did follow the part about adding or customizing DTMF tones if you are an admin; however, I can't add to the two.

