110-style punch-down blocks provide mass termination for telephone and Ethernet cabling in telecom closets requiring a 110 punch-down tool.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Pair 1+ | First pair positive | BUS |
| 2 | Pair 1- | First pair negative | BUS |
| 3 | Pair 2+ | Second pair positive | BUS |
| 4 | Pair 2- | Second pair negative | BUS |
| 5 | Pair 3+ | Third pair positive | BUS |
| 6 | Pair 3- | Third pair negative | BUS |
| 7 | Pair 4+ | Fourth pair positive | BUS |
| 8 | Pair 4- | Fourth pair negative | BUS |
110-style punch-down blocks provide mass termination for telephone and Ethernet cabling in telecom closets requiring a 110 punch-down tool.