Editing Asynchronous Transfer Mode (section)

==Reference model==
The ATM network reference model approximately maps to the three lowest layers of the [[OSI reference model]]. It specifies the following layers:<ref>{{cite web|publisher=Cisco Systems |title=Guide to ATM Technology for the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM Switch Routers |year=2000 |work=Customer Order Number: DOC-786275 |url=https://www.cisco.com/application/pdf/en/us/guest/products/ps1891/c2001/ccmigration_09186a00800f4b5d.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://www.cisco.com/application/pdf/en/us/guest/products/ps1891/c2001/ccmigration_09186a00800f4b5d.pdf |archive-date=2022-10-09 |url-status=live |access-date=19 July 2011 }}</ref>
*At the physical network level, ATM specifies a layer that is equivalent to the OSI [[physical layer]].
*The ATM layer 2 roughly corresponds to the OSI [[data link layer]].
*The OSI [[network layer]] is implemented as the [[ATM adaptation layer]] (AAL).