Method for video monitoring and voice intercom system

The present invention discloses a method for realizing voice intercom video surveillance, which method comprises: a video surveillance system based on IMS, respectively, through the CU and PU Core? Establishing a media channel between the AS and the IMS; when talkback via the established media channel between PU and CU and the AS and the AS, PU and CU between interactive voice media data. The present invention also discloses a case where a video surveillance system for implementing the voice intercom, video surveillance system, the present invention does not require any additional equipment, video surveillance systems implemented based on the IMS voice intercom function, and by Core? IMS transit signaling is accomplished voice intercom, easy security control, due to the Core? IMS to deploy the public Internet, which can effectively overcome the problem through the private network, easy application and promotion.