| Компонент | Описание | Производитель | |
| TMS99531 | PULSE AND TONE TELEPHONE DIALER |
Texas Instruments |
|
| TMS99532A | PULSE AND TONE TELEPHONE DIALER |
Texas Instruments |
|
| TMS99532A | FREQUENCY-SHITF-KEYED MODEM |
Texas Instruments |
|
| TMS99534A | FREQUENCY-SHITF-KEYED MODEM |
Texas Instruments |