The equipment has the function of call the HWB non switchboard anti-explosive telephone from program attemper to realize automatic connecting from switchboard to non switchboard.

• 室内程控电话转接器具有程控调度电话对HWB型无主机防爆电话扩音通讯系统进行呼叫通话,实现调度电话和无主机防爆电话站自动转接功能。