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公开(公告)号:US3435159A
公开(公告)日:1969-03-25
申请号:US3435159D
申请日:1966-01-03
Applicant: BELL TELEPHONE LABOR INC
Inventor: BROOKS CHESTER E , HENRY JAMES L , MEYERLE JOHN A
CPC classification number: H04M3/24
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公开(公告)号:US3070666A
公开(公告)日:1962-12-25
申请号:US4476160
申请日:1960-07-22
Applicant: BELL TELEPHONE LABOR INC
Inventor: BROOKS CHESTER E , CROFUTT JR GEORGE B , HENRY JAMES L
IPC: H01L27/06 , H03K19/0185 , H04Q3/00 , H04Q3/52
CPC classification number: H01L27/0635 , H03K19/018507 , H04Q3/0004 , H04Q3/521
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公开(公告)号:US3671676A
公开(公告)日:1972-06-20
申请号:US3671676D
申请日:1969-12-17
Applicant: BELL TELEPHONE LABOR INC
Inventor: HENRY JAMES L , SCHIMPF LUTHER G
IPC: H04M19/00
CPC classification number: H04M19/006
Abstract: This disclosure describes a telephone subscriber loop range extender having a signaling mode and a transmission mode. In the former, a resistive shunt is applied across the loop with each dial pulse to aid operation of the pulsing relay for an originating cell. For a terminating call, the shunt is applied upon answer, either during ringing or during the silent interval, to aid operation of the ring-trip relay. In the transmission mode, voice frequency gain and greater transmitter voltage are applied to the loop. A control circuit consisting of logic, timing and relay driving circuits, acts upon loop voltage and current data to control shunt action and mode selection.
Abstract translation: 本公开描述了具有信令模式和传输模式的电话用户环路扩展器。 在前者中,每个拨号脉冲在环路上施加电阻分流器,以帮助起始电池的脉冲继电器的操作。 对于终止呼叫,在应答时应用分路,无论是在振铃期间还是在静音间隔期间,都可以应用分流来帮助环路继电器的操作。 在传输模式下,语音频率增益和更大的发射机电压被施加到环路。 由逻辑,定时和继电器驱动电路组成的控制电路作用于环路电压和电流数据,以控制分流动作和模式选择。
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公开(公告)号:US3462557A
公开(公告)日:1969-08-19
申请号:US3462557D
申请日:1965-12-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: BROOKS CHESTER E , HENRY JAMES L , LINHART PETER B , MARKTHALER GRACE E , MASSONI DONALD R , MEYERLE JOHN A
CPC classification number: H04Q3/0004
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公开(公告)号:US3129291A
公开(公告)日:1964-04-14
申请号:US7938460
申请日:1960-12-29
Applicant: BELL TELEPHONE LABOR INC
Inventor: BROOKS CHESTER E , HENRY JAMES L
IPC: H04Q3/00
CPC classification number: H04Q3/0004
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公开(公告)号:US3508009A
公开(公告)日:1970-04-21
申请号:US3508009D
申请日:1967-09-06
Applicant: BELL TELEPHONE LABOR INC
Inventor: HENRY JAMES L , SHAFER WILLIAM L JR
CPC classification number: H04M19/006
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公开(公告)号:US3251948A
公开(公告)日:1966-05-17
申请号:US24386962
申请日:1962-12-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: BROOKS CHESTER E , CROFUTT JR GEORGE B , HENRY JAMES L
IPC: H04Q3/58
CPC classification number: H04Q3/58
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