VoATM
{{Short description|Data protocol}}
Voice over Asynchronous Transfer Mode (VoATM) is a data protocol used to transport packetized voice signals over an Asynchronous Transfer Mode (ATM) network.Tamara Dean. Network+ Guide to Networks. Course Technology, Cengage Learning, 2010, p. 533. In ATM, the voice traffic is encapsulated using AAL1/AAL2 ATM packets.Cisco [http://www.cisco.com/en/US/tech/tk652/tk690/tsd_technology_support_sub-protocol_home.html], Voice over ATM (VoATM) VoATM over DSL is a similar service, which is used to carry packetized voice signals over a DSL connection.
Protocols
- ATM Adaptation Layer 1 (AAL1)
- ATM Adaptation Layer 2 (AAL2)
Deployment
VoATM is a multi-service, high speed, scalable technology but rarely found because of its expensive services.Ahmed, Fatima. [http://www.developer.com/voice/article.php/3112781/A-Comparison-of-Voice-Technologies-VoIP-VoFR-and-VoATM.htm], developer.com, November 24, 2003, accessed April 26, 2011.
Prioritization
Prioritization is implemented through QoS parameters.
Fragmentation
Fragmentation is built into ATM with its small, fixed-sized, 53-byte cells.AAL Types [http://www.infocellar.com/networks/ATM/AAL-types.htm], accessed April 26, 2011
Variable delay
Echo cancellation
VoATM transports data, voice, and video at very high speed. The same method for echo cancellation is employed.
See also
Professional wide band audio over ATM. Audio Engineering Society AES47