/mcpBarge Restrictions Description Restriction The Barge initiator cannot conference in additional callers. Additional callers CTI does not support Barge through APIs that TAPI and JTAPI applications invoke. CTI generates events for Barge when it is invoked manually from an IP phone by using the Barge or cBarge softkey. Computer Telephony Interface (CTI) The original call requires G.711 codec. If G.711 is not available, use cBarge instead. G.711 codec You can assign a softkey template that contains the Barge softkey to any IP phone that uses softkeys; however, some IP phones do not support the Barge feature. Cisco Unified IP Phones If you configure encryption for Cisco Unified IP Phones 7960 and 7940, those encrypted devices cannot accept a barge request when they are participating in an encrypted call. When the call is encrypted, the barge attempt fails. A tone plays on the phone to indicate that the Barge failed. Encryption If the number of shared-line users in the conference is equal to or greater than the configuration for the Maximum Number of Calls setting for the device from which you are attempting to barge, the phone displays the message, Error: Past Limit. Maximum number of calls Barge Troubleshooting No Conference Bridge Available When the Barge softkey is pressed, the message No Conference Bridge Available is displayed on the IP phone. The Built In Bridge field in the Phone Configuration window for the target phone is not set properly. To resolve the problem, perform the following steps: 1. From Cisco Unified CM Administration, choose Device > Phone and click Find the phone to find the phone configuration of the phone that is having the problem. 2. Set the Built In Bridge field to On. 3. Click Update. 4. Reset the phone. Error: Past Limit The phone displays the message, Error: Past Limit. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 527 Presence and Privacy Features Barge Restrictions