RTS partyline intercom systems use a modified 4-pin XLR connector carrying a 30V DC power bus plus two audio channels for all-call and program audio on 2-wire partyline intercom systems in broadcast and live events.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | DC_POWER | 30V DC partyline power | PWR |
| 2 | AUDIO_A | Channel A audio program | ADC |
| 3 | AUDIO_B | Channel B audio all-call | ADC |
| 4 | GND | Ground | GND |
RTS partyline intercom systems use a modified 4-pin XLR connector carrying a 30V DC power bus plus two audio channels for all-call and program audio on 2-wire partyline intercom systems in broadcast and live events.