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 , 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. , 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 , accessed April 26, 2011
Variable delay Dynamic Bandwidth Circuit Emulation Service (DBCES) does not send a constant bit stream of cells but transmit only at an active voice call, reducing delays and variations.
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 as standardized by Audio Engineering Society in AES47.
References