December 2019
Beginner
510 pages
12h 7m
English
Content preview from Networking Fundamentals
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Synchronous Optical Network
Synchronous Optical Network (SONET) is a means of sending digital data down a high-speed optical connection. One of the benefits of SONET was the ability to send multiple data streams through a single connection. The following table shows the details of the speeds of each level:
| Level | Transmission speeds |
| OC-1 | 51.84 Mb/s |
| OC-3 | 155.52 Mb/s |
| OC-12 | 622.08 Mb/s |
| OC-24 | 1.244 Gb/s |
| OC-48 | 2.488 Gb/s |
| OC-192 | 9.953 Gb/s |
If you can remember the speed of OC-1, then to find the other speeds you just multiply that value by the OC level number.
While SONET utilized optical cabling, other technologies utilized copper cabling and T-carriers, which we will discuss in the next subsection.
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