Asynchronous Transfer Mode (ATM) was a WAN technology that used a combination of cell-based technology and SONET. ATM used 53-byte cells spaced evenly apart, which contained the following:
- 48 bytes for data
- 5 bytes for the routing header
These cells were transmitted into a constant stream over the network and traffic was transmitted at a high throughput with low latency, no matter whether data, voice, or video was sent. ATM offered throughput up to OC-192, but one disadvantage was that traffic had to be segmented due to the small available cell . . .
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