| Name | Medium | Speed |
| 56K modems | Analog phone line | 56 Kbps |
| Cable | Coaxial Cable (as in cable TV) | 2-3 Mbps |
| DSL | Analog phone line | 1.5-9 Mbps |
| ISDN | Digital phone line | 128 Kbps |
| Wireless | Radio Frequency | 3-30 Mbps |
| Satellite | Radio Frequency | 2-52 Mbps |
| Frame Relay (T-3) | Fiber Optic | 45 Mbps |
| OC-3 | Fiber Optic | 155 Mbps |
| Gigabit Ethernet | Cat 5 unshielded twisted-pair cable | 1 Gbps |