Migration from Legacy Network to HTTPS Network
In Cisco Unity Connection two or more Unity Connection servers or clusters can be connected through HTTPS links in a hub-spoke topology to form a single site network, referred to as an HTTPS Unity Connection network.
Migration from legacy network to HTTPS network can be done using a flash-cut approach which includes unjoining the existing network and then joining the locations in a pre-decided network topology.
A downtime window is required for the migration activity, which varies depending on the number of locations and the directory size; hence it should be planned during off-hours or over the weekend. Since legacy links are not supported in HTTPS networking, the entire network should collectively be migrated to the HTTPS network.