Editing Access network (section)

==Access process==
[[File:Access Network Authentication Process.jpg|thumb|Access Network Authentication High-Level Example]]
The process of communicating with a network 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 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 (telecommunications)|user]] [[Information-transfer transaction|information transfer]] between the intended source and destination ([[sink]]) within the specified maximum access time.

'''Access time''' is the time delay or [[Network latency|latency]] between a requested '''access attempt''' and successful access being completed.  In a [[telecommunication]]s system, access time values are measured only on access attempts that result in successful access.

Access failure can be the result of access outage, user [[Block (Internet)|block]]ing, incorrect access, or [[Denial of Service|access denial]]. Access denial ('''system blocking''') can include: 
*Access failure caused by the issuing of a system blocking signal by a [[communications system]] that does not have a [[camp-on busy signal]] feature. 
*Access failure caused by exceeding the maximum [[access time]] and nominal system access time fraction during an access attempt.