| 摘要 |
<p>Electronic porter system, suitable for a condominium provided with a conventional door phone system, integrating the existing door phone system with digital data network routing and data/command transmission device, both communicating by a signal converting device (5) with said existing door phone system, thus allowing an external operator, connected to said routing device, for remotely managing both the calls of each owner-occupier and any visitor carrying them towards said operator against conversion performer by said device (5).</p> |
