Multiple Control Functions on a Single Device

Most Oracle Communications Unified Session Manager deployments are expected to be homogenous. That is, the Oracle Communications Unified Session Manager would most commonly be operating with other Oracle Communications Unified Session Managers. In addition, because individual Oracle Communications Unified Session Managers can perform all CSCF functions, the network administrator can expect traffic patterns that are different from deployments that use discrete components to perform CSCF functions.

For example, it would be common for the subscriber database to allow the S-CSCF within a given Oracle Communications Unified Session Manager to take ownership of a UE seeking services via that same device's P-CSCF. In these cases, the user can expect the effective path and service route between a UE and an S-CSCF to be the same as the path between that UE and the P-CSCF.

IMS design anticipates multiple devices performing CSCF functions. Therefore, the Oracle Communications Unified Session Manager also supports operation across multiple Oracle Communications Unified Session Managers.