Sony PCS Series is supported until TMS 14.2, while the Sony PCS1 is supported until 14.4. You can still use the endpoints within TMS by adding them as an Unmanaged Endpoint (aka Room in earlier TMS versions) which will allow you to still schedule conferences with them, but directly managing the endpoint's configuration isn't supported after 14.2 and 14.4 respectively.
Refer to the TMS Release Notes for product support that has been added/removed, an extensive list has already been gathered by users in the forums here: endpoint-support-tms-14-and-tms-15.
