各设备支持的媒体类型:
1. Forward-lock(转发锁定):
application/vnd.oma.drm.message
2.Combined delivery(组合发送):
application/vnd.oma.drm.message
application/vnd.oma.drm.rights+xml
3.Separate delivery (分组发送):
application/vnd.oma.drm.rights+xml
application/vnd.oma.drm.rights+wbxml
application/vnd.oma.drm.cotent