| 摘要 |
<p>#CMT# #/CMT# The device has two telephonic jacks (4, 5) in which one of the jacks serves as a connector jack that connects a communication terminal e.g. telephone, to an analog telephone line (1) composed of two copper wires (1A, 1B), and the other jack is adapted to receive the connection from the terminal. Four pins (P1-P3, P5) are electrically common to the jacks, where two of the pins (P1, P3) are utilized for electrically connecting the wires of the telephone line and rest of the pins (P2, P5) remains free. The pins (P1, P3) are connected to the pins (P2, P5), respectively, by a short-circuit. #CMT#USE : #/CMT# Used in an internal telephonic service system for electrically connecting a communication terminal e.g. telephone, fax and analog modem, to a double stranded analog telephone line (claimed) that is utilized for transmitting a voice and data that constitutes the line, to a telephone exchange. #CMT#ADVANTAGE : #/CMT# The device is configured to be simple and inexpensive, and is easily installed by a user. The configuration of the device permits to increase the quality of analog digital subscriber line transmission service. The two pins are connected to another two pins, respectively, by the short-circuit, thus optimizing the functioning of the device and preventing the user to search the location of the resistor-capacitor device with three pins. The configuration of the device permits to symmetrize the internal telephonic service and to avoids parasitic antenna phenomenon caused by one of the wires of the line. The configuration of the device assures the short circuit function without necessitating the intervention of technician. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an internal telephonic service system. P1-P3, P5 : Pins 1 : Analog telephone line 1A, 1B : Copper wires 4, 5 : Telephonic jacks 6 : Cable.</p> |
