| 摘要 |
<p>In the present invention, disclosed are a call system of a direct connection type for a monitor and a service method thereof, capable of simply constructing a call system by directly combining with an external input port of the monitor without an additional computer or communication device. The present invention provides the call system of the direct connection type which is directly connected to the external input terminal of the monitor and includes a multipurpose transceiver which automatically recognizes the connection with the monitor and a calling device which communicates with the multipurpose transceiver with RF.</p> |
