Yes I was trying to very specific so it could hopefully be easy to answer.
The answer does have an impact on my use of my service. Sounds like either I was not specific
enough or you don't know the answer. Assuming it was lack of specificity in the question I will
try to expand. I am wondering if there are any UDP port numbers that are available for unsolicited incoming packets that can be used without punching a hole in whatever "firewall" exists when connected via cellular data (NOT wifi).