.. _cc_prerequisites:

Prerequisites: Overview
-----------------------

1. Once you have VOSS-4-UC configured and have added a Provider, add a Customer
   (under Provider or Reseller). Log in as a Provider Admin.
2. Contact Center configuration is only supported for dedicated Unified
   Communications Applications for a Customer. When adding a Provider, clear
   Shared UC Apps.
3. After successfully adding a Customer, choose the Customer hierarchy at the
   above context level and then add the Cisco Unified Communications Manager(s)
   to that customer from **Apps Management > Cisco Unified Communications Manager > Servers**.
4. Complete a Cisco Unified Communications Manager import before proceeding further.
5. VOSS-4-UC supports multiple Cisco Unified Communications Manager clusters at
   a Customer hierarchy. You can decide which cluster to use for Contact Center
   and IP telephony.
6. SIP Trunk Security Profiles must be created manually in each Cisco Unified
   Communications Manager and synced to VOSS-4-UC.
7. For the Contact Center customers, Built-in-Bridge must be enabled for the
   phones. By default, it is disabled at system level.
8. SIP Trunk Profiles must be created manually in each Cisco Unified Communications
   Manager and synced to VOSS-4-UC.