CUCM Architecture: Cluster Growth and Redundancy Considerations

  • Subscriber handles all phones – Read DB only
  • Publisher is important for database changes and replication and therefore we don’t ideally want any phones connecting to it! Read/Write DB. Separate the Publisher when exceeding 1000 phones.

Redundancy Options

IMG_4230

 

*User Facing Features = UFF – Subscriber can write changes to itself and back to the Publisher