You must configure the following for all the users with CS 1000 endpoints:
Session Manager Communication Profile
Note:
The association of endpoints with Session Managers is done with the Session Manager Communication Profile. All users in a Branch must have the same associations with the Session Manager.
Communication Manager Communication Profile
Note:
Some Device Adapter telephony features can be customized with the Avaya Breeze® platform Service Profile and is associated with a user through the Avaya Breeze® platform Communication Profile. Additional configuration using the Avaya Breeze® platform Communication Profile may be necessary.