This International Standard specifies an additional Type 20 communication network to IEC 61158-5-20@ IEC 61158-6-20 and a Communication Profile CP 9/2 in addition to IEC 61784-1 CPF 9. This standard specifies the following: ?Physical layer service definition and protocol specification@ ?Data-link layer service and protocol@ ?Application layer service and protocol@ ?Network management@ ?Security@ ?Communication profile@ ?Wireless procedures and ?Gateway.