This solution uses GPRS as the primary polled alarm transmission path. 90 second polling is the standard poll rate over GPRS. If the customer wished to have a faster polling rate, then 20 second polling could be implemented over GPRS for an additional charge.

If the GPRS path also becomes unavailable, then the Multipath-IP STU will select the ISP dialup path to maintain polling. The STU dials the ISP and establishes an IP session, then starts polling. This IP session will stay online for as long as the primary path is unavailable until the allowable ISP dialup time for that month expires. When the primary path becomes available, the Multipath-IP STU will revert back to polling over GPRS.

In the unlikely event that all of these polled paths are unavailable, there are also traditional backup paths such as PSTN dialler or GSM, over which alarm and event data can be sent.

Multipath IP now includes dual GPRS paths. These GPRS paths provide separate communications using multiple network providers (i.e Telstra & Optus). This provides a greater level of redundancy should either network become unavailable.