Answer incoming call on DSS key

[Karl_Yealink]

Hi,

Why do you need this feature? We don't have a function support this request.

But there is a method can support this request, but there are something difference from your the complete request.
You can configure a BLF key for this special number, when this number call to you.
The phone will ringing, and you can see the BLF key, it will flash. It mean that this number call to you.
You can press the BLF key to pick up the call.

But note that this is a BLF key, it will monitor the special number, if the number call to others, the key also will ringing.
Only when the phone receive the special incoming call, you press the BLF to pick up the call without pressing answer.