Design of visual emergency command and control system via the media of the phone line

In the tasks of counter-terrorism,stability maintenance,emergency rescue and disaster relief,phone line for its lightness,convenient setting,economic usefulness and so on,has a wide range of application environments.As technology development,the phone line has been further developed to use the wider bandwidth,and the wish to use the bandwidth of phone line to transfer multiple business became a reality.On client,all kinds of task will be integrated in the IP data packet,then the IP data will be transmitted via the phone line to the command post for the soft switching,then the multi communications are reached.