General

The MX-ONE Servers can be connected to a redundant network, using Ethernet bonding.

Certain features, like for example, operator queue and ACD backup group, can be duplicated and placed indifferent Servers. This increases the reliability for specific features.

Server redundancy means that a standby MX-ONE Server takes over the failing Server's identity, including the IP address (the alias address), and will continue to act as Service Node (LIM). The media gateways of the failing server will be controlled by the standby server.

At server redundancy the servers are assigned both real and alias IP addresses. When a Server goes down, the alias addresses of the failing Server are moved to the standby server. The Service Node is reloaded and started on the standby server using the Server number of the failing Server.

The standby server will take over any failing servers identity and continue execution of call processing. It is recommended that the standby server is of the same type as the failing server.

To achieve server redundancy the Servers are arranged in clusters. A cluster is a number of Servers with one designated standby Server. The MX-ONE can have a maximum of 10 Servers per cluster.

The HLR backup/redundancy feature provides a possibility for H.323 and SIP extensions to temporarily register, on certain conditions, to a backup HLR in another server (LIM) than the ordinary HLR server(LIM).

You can use several Cassandra database centers but you must have to connect 1 Cassandra database node per Data Center, which could be a co-located one with a Service Node or standalone.