公开(公告)号：US3594517A

公开(公告)日：1971-07-20

申请号：US3594517D

申请日：1969-05-12

申请人： CHARLES L WOODRUFF ,  RUBEN L WIENKE

发明人： WOODRUFF CHARLES L ,  WIENKE RUBEN L

IPC分类号： H04M3/22 ,  H04M3/24 ,  H04M15/06 ,  H04Q3/72

CPC分类号： H04M15/06 ,  H04M3/229 ,  H04M3/24 ,  H04M3/42059 ,  H04M2242/22 ,  H04Q3/72

摘要： A device for verifying the core panel wiring of identifier equipment for direct-dial long distance telephone equipment comprising plurality of lamps connected through two groups of relays to the output of the core panel of the identifier equipment, wherein the first of said two groups of relays are operatively connected to one of the sequencing relays of the identifier equipment which selectively provide input voltage to the core panel, and the second group of relays being connected to a source of energy independent of the sequencing relays to hold in an illuminated condition any lamps lighted in response to output from the first sequential output from the core panel. An additional lamp operatively connected to the identifier equipment to indicate that the equipment is in use, a party selection switch connected to the party identification relays of the identifier equipment, and a starting switch to connect the verifying device to the circuitry of the identifier equipment.