What is the fine-grained topic of the following text: The Yealink T48GN is a Skype For Business Phone and is certified compatible with 3CX, Asterisk and BroadSoft BroadWorks, along with many more IP PBX and hosted platforms, making it the ideal choice for busy managers. Only return the topic.
Yealink T48GN Skype For Business Phone compatibility and ideal usage