Where is ATM protocol used?

Where is ATM protocol used?

ATM stands for Asynchronous Transfer Mode, is a high-speed, broadband transmission data communication technology based on packet switching, which is used by telcos, long distance carriers, and campus-wide backbone networks to carry integrated data, voice, and video information.

What is the benefit of ATM network?

Benefits of ATM Networks are It provides the dynamic bandwidth that is particularly suited for bursty traffic. Since all data are encoded into identical cells, data transmission is simple, uniform and predictable. Uniform packet size ensures that mixed traffic is handled efficiently.

How does ATM protocol work?

ATM uses zero routing. Instead of using software, dedicated hardware devices known as ATM switches establish point-to-point connections between endpoints, and data flows directly from source to destination. Ethernet and Internet Protocol (IP) use variable-length packets. ATM uses fixed-sized cells to encode data.

Is ATM protocol still used?

ATM is a core protocol used in the SONET/SDH backbone of the public switched telephone network (PSTN) and in the Integrated Services Digital Network (ISDN), but has largely been superseded in favor of next-generation networks based on Internet Protocol (IP) technology, while wireless and mobile ATM never established a …


Asynchronous Transfer Mode (ATM) is a WAN technology that uses fixed length cells. ATM cells are 53 bytes long, with a 5-byte header and 48-byte data portion. ATM allows reliable network throughput compared to Ethernet.

What layer is ATM in OSI?

physical layer
ATM’s physical layer corresponds to both the physical and data link layer of the OSI model. The physical layer deals with the physical transmission of the bit stream and therefore depends on the physical medium used. Copper cable or fiber optics can be used for ATM.

Why can’t we use ATM Internet?

Too many options are being added. ATM networks have to work for constant bit rate (CBR) traffic as well as variable (VBR) and available bit rate (ABR) traffic. They have to work for local area (LAN) as well as for wide area (WAN). They have to work for low-speed as well as for high speed.

What is ATM connection?

Asynchronous Transfer Mode (ATM) is a cell-switching, connection-oriented technology. In ATM networks, end stations attach to the network using dedicated full duplex connections. The ATM networks are constructed using switches, and switches are interconnected using dedicated physical connections.