Where multiple devices have access to their own ISDN on separate PRI and BRI circuits, each will probably not be using the ISDN all at the same time just some applications may require extra capacity for peak periods. As other application notes show, Liberator can help “smooth” these loadings and give applications and users performance improvements by combining all ISDN requirements into one or more PRIs and sharing the access. In the ISDN diagram below the video conference unit is using large amounts of capacity, but when it is not being used….

Liberator frees-up the video conference unit’s ISDN and it becomes available for the router (for example). Treating the network ISDN as a shared “pool” and Liberator’s ability to set minimum and maximum access for each device or pool of devices, means that each device uses the ISDN efficiently but always having a minimum amount of access ready and reserved for use. Overall each device can have more access available when needed for peak loads, improving performance without adding extra ISDN services.