You can also use
5N0 A,B & C versions, but not if it doesn't support your phone. Also you need a working Menu button on MFSW
You could also use 7P6 and 5K0 kits which will work with the RNS and the Phone button works on the MFSW to accept and end calls. Although it will not display info in the Highline.
729B the Phone button doesn't work. It will display in highline and you would press the OK button to accept call