Specifications
Configuration and Maintenance Manual
12
• Maximum number of users per audio conference: 200
A maximum of 100 concurrent users with G.729 encoding can connect to all audio conference 
calls in progress (as per previously noted, the number of G.729 ports is configurable under 
system options Table 6 with a range of 0-100, with default of 100). Once the maximum number 
of G.729 ports have been reached, additional users with G.711 encoding can connect and join 
an audio conference up to the supported limits.
Web-Only Conference
Higher bandwidth requirements are necessary to support Web conferencing collaboration 
features. The MCA server does not prevent more than the supported limits, it only tracks what 
is licensed. The following capacities are supported for Web conferencing:
• Total number of concurrent Web conference users: 300
• Maximum number of users per Web conference: 300
Determining Bandwidth
The following is a scenario to help determine approximate usage type and measure the amount 
of bandwidth required. Video quality and frames per second (fps) are features that are 
configurable by the individual user according to their preference. Combine the collaboration 
bandwidth (Tab l e 3) and video bandwidth (Tabl e 4) for the number of users to estimate the total 
bandwidth required.
Running multiple Web conferences simultaneously with high quality video (30 fps) and Desktop 
Sharing on a network with high traffic could degrade overall performance. Mitel recommends 
that you set up a test conference based on the intended use to determine actual performance 
and monitor the attendee settings. This is the most accurate way to approximate the actual 
bandwidth required, which provides an estimate of required throughput needed by the host and 
participants.
Note: MCA supports a maximum of 100 G.729 ports is a single application configuration 
and a maximum of 50 ports on MAS running multiple applications.
Note: Terminal server environments, such as Citrix
®
 and Remote Desktop, do not 
support video.
Note: Bandwidth is a significant factor for performance during a Web conference or a 
Video Call and MCA server resources (CPU and memory) used are minimal.
Note: The recommended setting for video quality is 8 fps (default) or 15 fps. Settings 
above the recommended values will significantly increase the bandwidth required.










