All Yealink DECT products use the CAT-iq 2.0 standard. However, to enhance the feature set of the Yealink phone, there have been some modifications to the standard.
You may be able to register other handsets to the Yealink DECT base stations, but all of the features may not be available.
You may be able to register Yealink DECT handset to other base stations, but all of the features may not be available.
It is recommended that only Yealink handsets and Yealink base stations be used together to ensure optimal performance.