NCP redundancy
Redundancy - allows You control maintain services, through the use of two devices Call Manager, joined as a one logical system. The system enables the control mode protected against hardware failure or road junction. In the case where one of NCP-CM fails, the other takes over the role and provide control for other devices like NCP-GWx, phones etc. In redundant mode, there are two types of Call Manager:
- MAIN - set up as a "master"
- BACKUP - set up as a "slave"
We distinguish between the two types of operation:
- RUNNING - active, which currently controls the operation of processes and equipment;
- STANDBY - standby mode, in the case information about the failure of the MAIN Call Manager enters RUNNING..
Dwa urządzenia połączone są dwoma interfejsami (INT oraz RDU), w celu zapewnienia niezawodnego systemu sprawdzania stanu jednego z dwóch Call Manager'ów.
Dodatkowo, w celu sprawdzania stanu systemu redundancji, możliwym jest ustalenie automatycznego przełączania ze stanu RUNNING na STADBY, według harmonogramu.
