A standard protocol (IEEE 802. 3) for a 10-Mb/s baseband local area network (LAN) bus using carrier-sense multiple access with collision detection (CSMA/CD) as the access method, implemented at the Physical Layer in the ISO Open Systems Interconnection--Reference Model, establishing the physical characteristics of a CSMA/CD network. Note 1: Ethernet is a standard for using various transmission media, such as coaxial cables, unshielded twisted pairs, and optical fibers. Note 2: The IEEE-802. 3 standard is based on a proprietary product with a similar name.