DS3 (T3) digital signal carries 28 T1 circuits at 44.736 Mbps over coaxial cable with BNC connectors. Used in carrier interconnects, legacy WAN connections, and multiplexer equipment.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Center Pin | DS3 signal 75 ohm | BUS |
| 2 | Outer Shell | Ground coaxial shield | GND |