voice DSP redundancy over-subscription model. It is important to know the concept of active versus standby resources in order to understand how over- subscription works. For each call that is made on our equipment, resources are used. A resource is active if it is currently in use and it is standby if it is being held in case of the active's failure. If an active resourse fails, the standby can take over and the call continues. On the standby resources in a redundancy configuration can be oversubscribed. A service provider system administrator can configure a voice DSP system to use one of the following oversubscription models: * none: implies 1:1 (one to one) oversubscription. When a standby is allocated, the pool of available actives is depleted by one. * low: implies 1:2 oversubscription. * medium: implies 1:4 oversubscription. * high: implies infinite oversubscription. Active pool is never depleted when any standbys are allocated. If all active resources are used for real calls, no standby resources will be available to take over a failed call. The default value of this variable is high. This variable is supported only on BAN with VASP card(s).