ABSTRACT

C. Medium Access Control Methods Based on the IEEE documents 802.2, 802.3, 802.4, and 802.5, ISO has standard­ ized the following medium access control methods ( M A C methods):

• CSMA/CD medium access control method • Token passing bus medium access method • Token passing ring medium access method

Carrier Sense Multiple Access with the Collision Detection

Medium access is an extension o f the A L O H A concept, originally known as lis­ ten-while-talking protocol (LWT protocol). The improved version o f the protocol, worked out in jo int efforts o f DEC, I N T E L , and X E R O X , was used for imple­ mentation o f Ethernet.