Conference Capacities

Last Updated : Aug 14, 2025 |

For full details on system capacities, refer to Avaya IP Office™ Platform Guidelines: Capacity.

The following table summarizes the overall system capacity for conference calls and maximum participants in any individual conference call. This capacity limits apply to all conference types.

System Mode

Total Conference Participants

Maximum Conference Size

IP Office Server Edition

256

256

IP Office Select

IP Office Subscription

512

256

IP500 V2

128

64

System Meet-Me Conferences

System meet-me conferences use the same resources as above. However, in addition there are limits on the number that can be configured.

Maximum Configured

IP500 V2

30

Other networks

120

In an IP Office Server Edition/Select network, these conferences are hosted on the primary server. If a secondary server is present, that server will host the system conferences during primary server resilience.