IEC 62056-4-7:20 15规定了用于IP网络上使用的DLMS/COSEM通信简档的无连接和面向连接的传输层(TL)。这些TL向服务用户DLMS/COSEM AL提供OSI风格的服务。无连接TL基于互联网标准用户数据报协议(UDP)。面向连接的TL基于Internet标准传输控制协议(TCP)。本第一版取消并取代了2006年发布的IEC 62056-47，构成技术修订。它包括以下变化: -该标准现在适用于IP4和IPv6网络； -参考了IEC 62056套件的最新版本。添加了DLMS/COSEM IANA注册端口号。

IEC 62056-4-7:2015 specifies a connection-less and a connection oriented transport layer (TL) for DLMS/COSEM communication profiles used on IP networks. These TLs provide OSI-style services to the service user DLMS/COSEM AL. The connection-less TL is based on the Internet Standard User Datagram Protocol (UDP). The connection-oriented TL is based on the Internet Standard Transmission Control Protocol (TCP). This first edition cancels and replaces the IEC 62056-47 published in 2006 and constitutes a technical revision. It includes the following changes:
- This standard is applicable now both for IP4 and IPv6 networks;
- Latest editions of the IEC 62056 suite are referenced. DLMS/COSEM IANA-registered port numbers added.