I'm writing a program to intercept incoming SMS messages and I'd like to know
how you know what the incoming port is. i'm using WMA and Push Registry. I want the application to wake up when it receives an SMS message and process it.

Is the port set by the carrier's SMSC. If so, what is Nextel's port number and what is Sprints port number so I can code my application appropriately.

Is there a way to accept messages from all SMS ports?

Also, is there a way that I can test this application?