ANSI C12标准委员会在全国范围内采用了IEC 62056-5-3 Ed.3电能计量数据交换——DLMS/COSEM套件第5-3部分:DLMS/COSEM应用层。IEC 62056的这一部分从DLMS/COSEM客户端和服务器的结构、服务和协议方面规定了DLMS/COSEM应用层，并定义了指定DLMS/COSEM通信配置文件的规则。它定义了用于建立和发布应用程序关联的服务，以及用于访问COSEM接口对象的方法和属性的数据通信服务，COSEM接口对象在IEC 62056-6-2中定义，使用逻辑名称（LN）或短名称（SN）引用。

ANSI C12 Standards Committee makes an identical national adoption of IEC 62056-5-3 Ed. 3 Electricity Metering Data Exchange - The DLMS/ COSEM Suite Part 5-3: DLMS/COSEM Application Layer. This part of IEC 62056 specifies the DLMS/COSEM application layer in terms of structure, services and protocols for DLMS/COSEM clients and servers, and defines rules to specify the DLMS/COSEM communication profiles. It defines services for establishing and releasing application associations, and data communication services for accessing the methods and attributes of COSEM interface objects, defined in IEC 62056-6-2 using either logical name (LN) or short name (SN) referencing.