This important feature means a local ISDN device, or a group of devices can be configured with the Minimum number of “B” channels available to it, and the Maximum it is allowed to access.

Take as an example a site with a PABX on a PRI line, a router on a PRI and a group of BRI ports, all sharing a single PRI via Liberator.

During the day you could configure the PABX with a Minimum of 10 channels and a Maximum of 15; the router with a Minimum of 4 and a Maximum of 10; the BRI group with a Minimum of 2 and maximum of 8.

Overall, the total sum of Minimum channels is 10+4+2=16 These channels are held in reserve for the appropriate devices so they are immediately available for access. This leaves a “float” of 14 channels available from the PRI.

These “floating” or shared 14 channels can be accessed as-required by any of the three ISDN devices, up to their maximum allocation, on a first-come basis.

The “float” or shared channels means the ISDN services is used most efficiently but with all devices having allocated a minimum service level.

If you need help or clarification, please contact us.

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