Wireless Internet connectivity to a JACE controller is available starting in AX-3.4, using the GPRS cellular modem option and a VPN (Virtual Private Network) connection. Typical usage is where an ISP (Internet Service Provider) may not be available in the area, or possibly the local IT department does not want the NiagaraAX system on the local LAN. Or, for remote monitoring of a site where relatively few data points are collected, and where the cost of obtaining a permanent broadband connection is regarded as too high.

The following sections provide an overview of two main applications of the GPRS modem option:

Depending on configuration, both applications of a GPRS modem-equipped JACE may be used.