RMX 2000 Administrator's Guide - Polycom Support

Chapter 16-RMX Administration and Utilities
Video/Voice Port Configuration
16-58
The Video/Voice Port Configuration enables you to configure the RMX
Resource Capacity and if in MPM+ System Card Configuration Mode, to
select the capacity method.
Flexible Resource Capacity Mode
All resources are initially allocated as CIF video ports as it is a resolution
commonly supported by all endpoints.
The administrator can allocate some or all of these resources as Voice
resources and let the system allocate the remaining Video resources
automatically as participants connect to conferences. The system
automatically allocates resources according to the connecting
participant’s endpoint type, capabilities and line rate.
If the system runs out of voice ports, voice endpoints cannot connect to available
video ports. Conversely, video endpoints cannot connect to available voice
ports.
Flexible Resource Capacity mode is available and is the default selection in
both MPM and MPM+ System Card Configuration Modes. It is the only
allocation method in MPM System Card Configuration Mode.
Fixed Resource Capacity
Fixed Resource Capacity enables the administrator to allocate the number of
resources available to each video connection type and Audio Only
connections in advance. In Fixed Resource Capacity mode, the system is
always in a known state, and when used in conjunction with the Resource
Report, it gives the administrator precise control over resource allocation
and optimization. For more information, see "Forcing Video Resource
Allocation to CIF Resolution” on page 16-64.
Fixed Resource Capacity mode is available only in MPM+ System Card
Configuration Modes.
If all resources allocated to a specific endpoint type are in use and an
endpoint of that specific type tries to connect to the RMX, the RMX first
attempts to connect the endpoint at the next highest resolution. If not
resources are available at that level the RMX begins search for connection
resolutions at progressively decreasing resolutions.
Example: In a system that has 10 SD ports allocated and in use: