发明授权
US5604794A Switch system for directing call from a calling to a receiving instrument 失效
用于将呼叫定向到接收仪器的切换系统

Switch system for directing call from a calling to a receiving instrument
摘要:
A switch system for directing a call from a calling instrument to a receiving instrument. The switch system comprises a call originator unit that is electrically connected between the calling instrument and an outgoing telephone line. The switch system also includes a call receiver unit that is electrically connected between an incoming telephone line and the receiving instrument. The incoming telephone line is electrically connected to the outgoing telephone line.
公开/授权文献
信息查询
0/0