ECMA-81

For the purpose of compatible interconnection of data processing equipment via a local area network using the carrier sense multiple access collision detection technique (CSMA/CD) at 10 Mbit/s, this Standard ECMA-81:

• defines the services provided at the conceptual interface between the Physical Layer and the Link Layer above it (see section 3);
• specifies the electrical characteristics of the connection between Data Terminal Equipment and the cable defined in Standard ECMA-80 (see section 5).

Physical frame protocol characteristics are outside the scope of this Standard, and are defined in Standard ECMA-82.