@PierreRosello we've used 8821s for years with Meraki wireless though we have a few MR36s, we don't have any MR46s.  In general they work well though as @BrandonS say, if you have a small site without too many phones then Dect can work better.  We couldn't use it as each antenna could only support a max of 8 phones at a time and our buildings are large. ... View more

@PierreRosello we do have some 7925s that have been working on our Meraki wireless infrastructure.  What we have is below:   Dedicated VLAN, subnet and SSID for phones SSID is bridged mode WPA2 PSK 802.11r and 802.11w both disabled 5GHz only Bonjour forwarding disabled 12Mbps minimum bitrate   Make sure that wherever you are the phone can ideally see three APs for smooth roaming   Don't overload the 5GHz radios in the APs, for voice no more that 10 (yes, ten) client devices at a time is the recommended maximum for each AP, we have our busy SSIDs are 2.4GHz only to ensure this. ... View more