Software upgrade of redundant network components

A system for upgrading redundant network components, comprising:

• a first network component coupled to a second network component and operable to:
• process a stable call;
• receive a replication request from the second network component;
• assign an entry of a replication table of a shared memory database to the stable call, the replication table associated with the network component;
• transfer subscriber data of a first version to the second network component if the first network component is in an active mode and the second network component is in a standby mode, the subscriber data including features that subscribers have subscribed to, the subscriber data used by the first or second network component to process calls;
• and
• update the entry in response to storing the subscriber data in the shared memory database;
• stop transferring the subscriber data from the first network component to the second network component if the first network component is in a transient standby mode and the second network component is in the standby mode;
• update the entry in response to transferring the subscriber data.

An apparatus comprising logic for upgrading redundant network components, the logic encoded in a computer readable medium and operable to:

• receiving, by a mate network computer, a replication request from a network component, the network component related as a redundant peer to the mate network component processing a stable call;
• assign an entry of a replication table of a shared memory database to the stable call, the replication table associated with the network component;
• transfer subscriber data of a first version from the mate network component to the network component if the mate network component is in an active mode and the network component is in a standby mode, the subscriber data including features that subscribers have subscribed to, the subscriber data used by the network component or the mate network component to process calls;
• and
• update the entry in response to storing the subscriber data in the shared memory database;
• stop transferring the subscriber data from the mate network component to the network component if the mate network component is in a transient standby mode and the network component is in the standby mode;
• update the entry in response to transferring the subscriber data.

A system for upgrading redundant network components, comprising:

• means for receiving, by a mate network computer, a replication request from a network component, the network component related as a redundant peer to the mate network component processing a stable call;
• means for assigning an entry of a replication table of a shared memory database to the stable call, the replication table associated with the network component;
• means for transferring subscriber data of a first version from the mate network component to the network component if the mate network component is in an active mode and the network component is in a standby mode, the subscriber data including features that subscribers have subscribed to, the subscriber data used by the network component or the mate network component to process calls;
• and
• means for updating the entry in response to storing the subscriber data in the shared memory database;
• means for stopping transferring the subscriber data from the mate network component to the network component if the mate network component is in a transient standby mode and the network component is in the standby mode;
• means for updating the entry in response to transferring the subscriber data.