| 摘要 |
PURPOSE:To provide a coded voice monitoring circuit capable of flexibly corresponding to the introduction of plural new voice coding systems to a digital mobile communication network and furthermore corresponding to the input of information excepting for voice. CONSTITUTION:Plural voice coding conversion modules 10 to 12 which are modularized recognizes the signals of different voice coding signals which are decided for each module in advance. Then, the modules 10 to 12 convert an input signal to a fixed voice coding signal (mu-law signal, e.g.) at the time of identifying but outputs the input signal as it is when the signal can not be identified. At the time of detecting identification information of non-voice communication from the code string of the inputted signal, a non-voice corresponding module 13 outputs a guidance informing a maintenance person of being non-voice communication with mu-law signal, e.g. but when detection is impossible, the module 13 outputs the inputted signal as it is. These modules 10 to 13 are connected in series through a speech path switch 3 by its switching operation. |
