Many of the long-distance voice links under the oceans use ATM as their main transport protocol. Why, what is it about ATM that makes it such a popular protocol for this application?

ATM IN VOICE TECHNOLOGIES

The ATM abbreviation stands for "Asynchronous Transfer Mode . The telecommunication companies are using ATM for major data networking vendors . ATM is an addition to STM Synchronous Transfer Mode " which is a circuit based switched networking , where connection is established between end points before the arrival of data

ATM has resolved the conflict between circuit-switched networks and packet-switched networks by mapping both bit streams and packet-streams into small fixed size cells , which are tagged together with (virtual circuit identifier . These cells send demand packet cells on a

br synchronous time-slot , but packets are sent in asynchronous mode , which results in higher data speed The initial concept of ATM was to enable Broadband Integrated Services Network (B-ISDN , as it AMT was adopted from Telecommunication sector The arrival of VoIP has given the opportunity to explore fiber optic under oceans , which has Giga byte speed , and can carry both real time traffic , such as voice and high-resolution video and data as well

The real time traffic can tolerate some data loss , but not delay ATM provides a high-speed data transmission speed with very minimum amount of data loss . The earlier STM used burst technique , which resulted in a lot of bandwidth waste . ATM main idea is to carry the connection forward rather than delay , that 's why it is called "Fast packet switching with short fixed length packets " It is due to this concept of fixed packets and fast delivery , which has been the main stimulus for telecommunications companies to opt for their voice technologies Source

A Brief Introduction to ATM .http /academy .tamu .edu /atm /intro .html acronym .2005 ...