Compare ATM and Frame Relay

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written 7.7 years ago by

Sr No.	ATM	Frame Relay
1.	Fixed length packet size called cells (53bytes)	Variable length packet size called frames
2.	Processing overhead is reduced	Processing overhead is more
3.	User constant data rate	Variable constant data rate
4.	Allows multiple channel rate	Multiple channel not allowed
5.	Data transfers are within a single LAN	It is used to connect LAN and it is not implemented within a single area network
6.	Cost is higher	Less expensive
7.	ATM is a network switching technology that uses a cell based methodology to quantize data	FR is a packet switching technology for connecting network points in WAN
8.	ATM is designed for hardware implementation	Frame relay is designed by means of software
9.	It is difficult to upgrade hardware implemented ATM system	It is easier to upgrade software implemented Frame relay system
10.	Hardware implemented ATM have higher processing and switching thus proving high speed data transfer	Software implemented ATM Frame relay is slower as it takes more time to process and switch packets through virtual circuits
11.	Large overhead which gives low efficiency	Low overhead which gives low efficiency
12.	ATM is useful in transmitting video and image traffic at high speed for shorter transactions	Useful in transmitting large sized file for longer transactions with lesser error.

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