| 摘要 |
2131905 9318594 PCTABS00025 A monitoring phone system, utilizing an electrical net, for buildings or otherwise restricted areas. The system comprises a transmitting unit (5), which has a camera equipment (21) and a monitoring unit (8) with a display unit (20). The intercommunication of the units takes place by signals sent to the electrical net (4), whereupon the camera picture is converted into an electrical signal and, correspondingly, to a visible picture in the display monitor (20). Likewise, other information, for instance speech between the units (5, 8) takes place utilizing the electric net as transmitting means.
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