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| devolución de llamada (A feature that transfers a call back to the person who parked it, after a specified amount of time, so a caller doesn't remain on hold indefinitely) | |||
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ringback : 5 a las frases, 3 temas |
| Comunicaciones | 1 |
| Tecnología de la información | 3 |
| Telecomunicación | 1 |