Hi,
IPdatatel does have upload capabilities, we just do not use it. A call to their sales/tech team will quickly get you all the particular information that you require. I can guess that a dynamic IP address will not present any problem for your concerns. After all, the devices find themselves back to their servers and vice-versa without any problems. If the units can transmit and receive for interactive and direct keypad programming as if you were at the customer's house without any IP configurations, then upload/dowload should logically be the same, but do check with them.