Access in telecommunications is the process by which an effort to communicate through an electronic communications system is carried out.The process begins with an access attempt, in which one or more users interact with a
communications system to enable initiation of user information transfer. An access attempt itself begins with an issuance of an access request by an access originator.An access attempt ends either in successful access or in access failure - an unsuccessful access that results in termination of the attempt in any manner other than initiation of
user information transfer between the intended source and destination (
sink) within the specified maximum access time.
See more at Wikipedia.org...