I need to take into account "unlucky combination of events" to make my system reliable and not lose customers confidence as Erik put it.
I dont want my system to hangup if my car goes under a tunnel in the middle of SMS receiption or when my car goes under a high voltage powerline. So "I have never had a "bad message" as such through my system. "
is not good enuf
Thanx Bahri you raised good points.

Does anybody have idea how to compress my text messages? it would be nice if we can have embeded version of pkZip i can just use.

Mahmood