本标准旨在使用ANSI T1中规定的接口标准，为设施内的数据通信信道制定规范。105-1995. 该标准定义了使用SONET信号中的DCC字节进行数据通信的协议和体系结构。这些DCC字节携带网元之间的OAM&P信息，可以用作整个电信管理网络（TMN）的组成部分。

The purpose of this standard is to establish specifications for the data communications channels within facilities using the interface standard specified in ANSI T1.105-1995. This standrd defines the protocols and architectures for data communications using the DCC bytes within the SONET signal. These DCC bytes carry the OAM&P information between network elements and can be used as an integral part of the overall Telecommunications Management Network (TMN).