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    • 3. 发明申请
    • Auxiliary ringer and code screener
    • 辅助振铃器和代码筛选器
    • US20050152510A1
    • 2005-07-14
    • US10753564
    • 2004-01-09
    • Joseph Ladd
    • Joseph Ladd
    • H04M1/64H04M1/665H04M3/00
    • H04M1/665
    • An auxiliary ringer and call screener (ARCS) includes switches, a speaker, a reset button, an input jack, an output jack, and a power connecting jack interconnected with a housing, and ARCS circuitry mounted within the housing. The ARCS may also include an LED which illuminates when the ARCS emits an audible ring. An audible ring is produced through the speaker and a ring back tone is sent from the ARCS to a calling party to indicate that a proper sequence of DTMF codes from the call has been recognized and processed, when sequential incoming DTMF codes from a call from the calling party on the input jack match DTMF codes associated with settings of the switches. An audible ring is prevented from being emitted through the speaker, and a ring back tone is not sent back to the calling party when sequential incoming DTMF codes from the call on the input jack do not match the DTMF codes associated with settings of the switches.
    • 辅助振铃器和呼叫筛选器(ARCS)包括开关,扬声器,复位按钮,输入插孔,输出插孔和与壳体互连的电源连接插座,以及安装在壳体内的ARCS电路。 ARCS还可以包括当ARCS发出可听见的环时照亮的LED。 通过扬声器产生可听响铃,并且从ARCS向主叫方发送回铃音,以指示来自呼叫的正确序列的DTMF码已被识别和处理,当来自呼叫的顺序输入的DTMF码 主叫方在输入插孔上匹配与开关设置相关的DTMF代码。 通过扬声器发出可听响铃,并且从输入插孔上的呼叫顺序输入的DTMF码不符合与交换机设置相关的DTMF码时,回铃音不会发回主叫方。