New to open source - Building a product

[Wysocki, Andy]

I've been poking around the last few days, and I don't think I understand
one thing.

I'm thinking of taking this summer to write a program using the Open Source
H323 protocol stack.

Can I sell the code I wrote and ship the code and source for the H323 stack?

Could I use the OpenSource logo for the h323 stack or does the whole product
have to be opensource??

I understand I can build a product that runs on Linux and charge for it, but
how about a product that is compiled and built out of licensed code and
OpenSource code?

Thanks
Andy