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MCU Pool Orders MCU Management
Polycom, Inc. 159
See also:
“MCU Pool Orders” on page 156
“MCU Pool Order Procedures” on page 162
MCU Selection Process
The Polycom DMA system chooses an MCU for a user’s conference by
applying the following rules in order:
1 Select the MCU pool order:
a Use the pool order directly assigned to the user’s conference room.
b If none, use the highest priority pool order associated with any group
to which the user belongs.
c If none, use the system default.
2 Select the first MCU pool in the MCU pool order.
3 Select the best MCU in the MCU pool, based on how well their
capabilities fulfill the user’s needs in the following respects:
— MCU has RMX profile required by user’s conference template.
— MCU has IVR service required by user’s conference template.
— MCU has recording capability required by user’s conference template.
If there are multiple MCUs that are equally capable, select the least used,
as determined by the following formula:
port_availability = (free_video_ports / total_video_ports) +
(0.0001 * free_audio_ports / total_audio_ports)
mixer_availability = (total_video_ports - 2 *
active_dma_conferences) / total_video_ports + 0.0001 *
(total_audio_ports - 2 * active_dma_conferences) /
total_audio_ports
availability = min (port_availability, mixer_availability)
4 If no MCUs in the selected MCU pool have capacity, select the next MCU
pool in the pool order and return to step 3.
Note
MCU pools and pool orders are not used to select an ISDN gateway for simplified
gateway dialing. See “ISDN Gateway Selection Process” on page 147.
The process below can be affected by the mechanisms that the system uses for
detecting and handling MCU availability and reliability issues. See “MCU Availability
and Reliability Tracking” on page 160.