| 摘要 |
PURPOSE:To prevent invalidatity and abnormality process by a program by fixing all monitor signal bits in the same value indicating talk channel disconnection at the time of fixed trouble discrimination. CONSTITUTION:When a fixed trouble of multi-frame step-out MFSO exceeding a front protection period is generated, an OR circuit output provided for a monitor signal storage memory SSRM Di/o input line and a Q2 output of a front protection counter GCNT goes to ''1''. Therefore, write data into a memory SSRM is forcibly set (fixed) disconnection of talking circuit in handling group is made to recognized to a program and invalid holding of call process program transaction is inhibited in an early stage, thereby bad influence on an exchange system as a whole is prevented and resources is utilized effectively. |
