Network Card User Manual
MGC WebCommander User’s Guide
7-38
By default, all Audio Only conferences are run on the Audio+ cards to enable 
the IVR system functionality.
Video conferences started on MCUs that include both the Standard Audio and 
the Audio+ cards use the Standard audio card by default, unless an IVR 
service is assigned to the conference. In such a case, the conference is run on 
the Audio+ card. Video conferences using the Audio+ card have the majority 
of the VoicePlus capabilities such as the use of DTMF codes during the 
conference.
Video conferences started on MCUs that include the Video+ card have 
additional features, such as Quad Views, Visual Effects, and the activation of 
the Click&View application on the participant’s endpoint screen.
• Audio+ 
• Audio (optional) 
Video+
• Net-2/4/8
• H.323 
• MUX card
Audio Only
Video and Audio
• Enables Standard/Meeting 
Rooms/Meet Me Per 
Conference Video conferences
• Enables AV (Welcome/
Attended) conferences
• Enables VoIP participants
• IVR enabled features 
(VoicePlus capabilities)
• Audio Only and Video Entry 
Queues
• COP conferences
• Video+ Capabilities
Table 7-4: Conference types according to MCU configuration (Continued)
MCU 
Configuration
Available 
Conference Types
Functionality
• Running Video Switching conferences on the Standard Audio card limits the 
maximum number of participants in a conference to 16 (12 video and 4 audio 
only). This number of participants can be increased to up to 30 participants 
when configuring the Audio Bridge component of the standard Audio card to 
1/30 in the “system.cfg”. For more details, see the MGC Manager User’s 
Guide, Volume II, “Setting Large Video Switching Conferences” in Chapter 1.
• With the Audio+ card, up to 100 participants at 128 Kbps can connect to one 
Video Switching conference (without special configuration). 
• The Audio+ 12/24, 24/48 and 48/96 cards support T1-CAS participants.










