CONTROL SYSTEM FOR BACKUP DEVICE UTILIZING ISDN NETWORK

摘要: PURPOSE:To attain synchronization between opposite stations without a communication error at changeover of look-back by using information sent through other ISDN line than an used backup to take synchronization. CONSTITUTION:In the case lookback means 22, in (D channel) for control data supplied from network 18 (B is 24. Moreover, 14 stations. Thus, occurrence attended with prevented advance.