UCC3751D и другие
| Компонент | Описание | Производитель | |
| UCC3751D | SINGLE LINE RING GENERATOR CONTROLLER |
Texas Instruments |
 |
| UCC3751DTR | SINGLE LINE RING GENERATOR CONTROLLER |
Texas Instruments |
|
| UCC3751N | SINGLE LINE RING GENERATOR CONTROLLER |
Texas Instruments |
|