I see that no one answered you yet......,
You use the SignaLink with the TS-480 just as you would as if the rig is in front of you.
All you do is plug the microphone cable into the control RRC instead of the TS-480. Then
connect the speaker output of the control RRC as well and you are in business.
Of course, a solid internet connection is required to prevent dropoffs.
73,
Mitch DJ0QN / K7DX