| 摘要 |
The solution concerns the connection of the generator of the frequency dialling of telephone sets for the use in the telecommunication network, which consists of a transistor, two condensers, four resistors, Zener diode and integrated circuit of dialling. The connection is characterized by the fact that the security of various levels of signals of the frequency dialling, which are required by the individual line administrations, is achieved by a change in the value of one resistor in the circuit of the output amplifier of the dialling signals. The generator of the frequency dialling of telephone sets can be optimally used for the solution of telephone sets with the frequency dialling and other devices that are designed for information transmission through the telephone subscriber line by means of the two-frequency signal where the structural design of the telephone set does not enable to use the speaking circuit as an output amplifier of the two-frequency dialling signal.<IMAGE>
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