/mcpNote If this parameter is set to Off, configure single-button barge for each phone by setting the Single Button Barge field in the Phone Configuration window. Step 4 Set the Allow Barge When Ringing service parameter to True. Step 5 Click Save. Configure Barge for Shared Conferencing Cisco recommends that you do not configure Barge for shared conferencing (cBarge) for a user who has Barge configured. Choose only one barge method for each user. Procedure Step 1 From Cisco Unified CM Administration, choose System > Service Parameters and set the Built In Bridge Enable clusterwide service parameter to On. Note If this parameter is set to Off, configure cBarge for each phone by setting the Built in Bridge field in the Phone Configuration window. Step 2 Set the Party Entrance Tone clusterwide service parameter to True (required for tones) or configure the Party Entrance Tone field in the Directory Number Configuration window. Step 3 Set the Single Button Barge/CBarge Policy to cBarge. Note If this parameter is set to Off, configure Single-button cBarge for each phone by setting the Single Button cBarge field in the Phone Configuration window. Step 4 Set the Allow Barge When Ringing service parameter to True. Step 5 Click Save. Associate User with Device Before you begin Perform one or both of the following: • Configure Barge for Built-In Conferencing, on page 524 • Configure Barge for Shared Conferencing, on page 525 Procedure Step 1 From Cisco Unified CM Administration, choose User Management > End User. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 525 Presence and Privacy Features Configure Barge for Shared Conferencing