| 摘要 |
<p>PURPOSE:To set automatically the time of an internal clock of a switchboard at the time of recovery from an abnormal state, when the abnormal state hindering the service occurs in the switchboard, regarding a setting system of time information of the internal clock of the switchboard. CONSTITUTION:In a communication network wherein a switchboard l having an internal clock 3 indicating the current time is connected to a common channel signaling network 2, a time information delivering means 4 which delivers periodically time information on the current time to the aforesaid common channel signaling network is provided, and a time information receiving means 5 which receives the aforesaid time information from the common channel signaling network, a detecting means 6 of recovery from abnormality which outputs information on recovery from abnormality when an abnormal state occurs and settles in the switchboard, and an internal clock control means 7 which sets on the internal clock the time information received by the time information receiving means, when the aforesaid information on recovery from abnormality is outputted, are provided in the aforesaid switchboard.</p> |
