AES51 is a standard first published by the Audio Engineering Society

Audio Engineering Society

Established in 1948, the Audio Engineering Society draws its membership from amongst engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products for audio, and persons working...

 in June 2006 that specifies a method of carrying ATM (Asynchronous Transfer Mode

Asynchronous Transfer Mode

Asynchronous Transfer Mode is a standard switching technique designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing, and it encodes data into small, fixed-sized cells. This differs from approaches such as the Internet Protocol or Ethernet that...

) cells over Ethernet

Ethernet

Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....

 physical structure intended in particular for use with AES47

AES47

AES47 describes a standardised method for packing AES3 professional digital audio streams over Asynchronous Transfer Mode networks. The AES47 method is published by the International Electrotechnical Commission as IEC 62365.-Introduction:...

 to carry AES3 digital audio transport structure. The purpose of this is to provide an open standard, Ethernet

Ethernet

Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....

 based approach to the networking of linear (uncompressed) digital audio with extremely high quality-of-service alongside standard Internet Protocol

Internet Protocol

The Internet Protocol is the principal communications protocol used for relaying datagrams across an internetwork using the Internet Protocol Suite...

 connections.

AES51 details

This standard specifies a method, also known as “ATM-E”, of carrying asynchronous transfer mode

Asynchronous Transfer Mode

Asynchronous Transfer Mode is a standard switching technique designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing, and it encodes data into small, fixed-sized cells. This differs from approaches such as the Internet Protocol or Ethernet that...

 (ATM) cells over hardware specified for IEEE 802.3

IEEE 802.3

IEEE 802.3 is a working group and a collection of IEEE standards produced by the working group defining the physical layer and data link layer's media access control of wired Ethernet. This is generally a local area network technology with some wide area network applications...

 (Ethernet). It is intended as a companion standard to AES47

AES47

AES47 describes a standardised method for packing AES3 professional digital audio streams over Asynchronous Transfer Mode networks. The AES47 method is published by the International Electrotechnical Commission as IEC 62365.-Introduction:...

 (Transmission of digital audio over ATM networks), to provide a standard method of carrying ATM cells and real-time clock over hardware specified for Ethernet.
The full details of AES51 can be studied in the standards section of the Audio Engineering Society

Audio Engineering Society

Established in 1948, the Audio Engineering Society draws its membership from amongst engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products for audio, and persons working...

by downloading copies of the AES51 document as a PDF file.