Campbell Scientific cellular data plans provide a private dynamic IP address. With a dynamic IP address, a data logger can connect to the Internet and push data or emails to a programmed location. However, because the modem is using a dynamic (changing) address within a private network, you cannot initiate communication with the data logger without the help of a routing service. Campbell Scientific offers the Konect PakBus Router service to enable this two-way communication between Campbell Scientific support software and the data logger. When you purchase a cellular-enabled device from Campbell Scientific, Inc., a complimentary subscription to the Konect PakBus Router is included with your purchase.