I'm an interpreter for the deaf. The short answer is no. Each country tends to have its own form of sign language. In the United States we use American Sign Language (ASL). That being said, my deaf wife had been a volunteer to assist incoming students when she was an undergrad at Gallaudet University, and had the opportunity to meet deaf kids from all over the world. The ones from other countries had to first be immersed in ASL before they could take regular courses. She told me, however, that even though they signed differently, they soon managed to communicate to each other fairly well, using gestures. You'd be amazed.