| 摘要 |
A system and method of monitoring a location 102 for unauthorised access or activity comprising receiving a video feed using a first signal protocol from a video camera 100 monitoring the location, converting the first signal protocol into a second signal protocol compatible with a mobile phone, sending the video feed using the second signal protocol to a designated mobile phone 116, and to a second receiving device 118 in response to a user input on the designated mobile phone. A SIP application server 112 may wirelessly receive the video as an IP signal or RTP signal and translate it using a media gateway 114 into a 3G video signal for the mobile phone. The camera may be triggered in response to activity detected by a motion sensor 104. The resolution of the second signal may be optimised for the phone screen size. The second receiving device may be a computer 120 in a police or security service control room. If the video signal cannot be sent to the primary mobile phone, it may be forwarded to a secondary designated mobile phone 118.
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