A solution by instruction commanding (loudspeaking talkback)
Features of the solution:
In this scheme, all users of local extension sets adopt digital four-wire interface, and loop trunk interface is mainly applied to WAN dispatching system composed of multicomputer. Four-wire dispatching extension set is a dedicated device, which can be connected with power amplifier device or sound console. After starting up, it sets as a state of direction connection. After the system has been power-on and connected, all local extension sets stay at a state of circuit direct connection in order to satisfy demands of real-time command and dispatching. Users of local extension sets can be set as several talk modes for real-time choice of dispatchers.
Application of the solution:
The solution is developed for users with requirements for real-time command and dispatching. It can also be applied to voice classrooms of colleges, simultaneous interpretation system of large-scale conference, command and dispatching system of radar and naval vessels, broadcasting system of airport as well as public address (PA) of production lines in industries and mining. Typical users include the General Reserve Department of PLA.