| 摘要 |
<p>A system for a wireless interphone capable of voice routing is provided to perform bidirectional voice transmission and to observe Zigbee wireless communications standard protocol due to compressing voice signal at high rate. A system for wireless interphone comprises a lobby phone(100), a first interphone(200) and a second interphone(300). The lobby phone compresses and transmits inputted voice signal. The first interphone receives the compacted speech signal which is transmitted from the lobby phone. The second interphone receives the compacted speech signal which is routed by the first interphone. The second interphone releases the compression of the received speech signal. And interphone outputs the canceled speech signal.</p> |
