IEEE 802.5 is called
IEEE 802.5 is called token ring.
The term token ring generally is used to refer to both IBM's token ring network and IEEE 802.5 networks.
A token ring network is a local area network (LAN) in which all computers are connected in a ring or star topology and pass one or more logical tokens from host to host. Only a host that holds a token can send data, and tokens are released when receipt of the data is confirmed.
Token ring local area network (LAN) technology is a communications protocol for local area networks. It uses a special three-byte frame called a "token" that travels around a logical "ring" of workstations or servers.