| Compare the speed | |
| T1 | T-1 - 1.544 megabits per second (24 times DS0 lines) |
| T-3 | T-3 - 43.232 megabits per second (28 times T1s) |
| OC3 | 155 megabits per second (100 timesT1s) |
| OC12 | 622 megabits per second (4 times OC3s) |
| OC48 | 2.5 gigabits per seconds (4 times OC12s) |
| OC192 :(NETTHAILAND) | 9.6 gigabits per second (4 times OC48s) The highest Speed at the moment |
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