The main part of the code was in Gammu for almost two months, but now it was finally debugged and confirmed working. For now you need to use version from git, but upcoming 1.28.95 will include it as well.
The support is implemented through m-obex protocol, which can be switched on from standard AT commands, giving transparent support for all supporting phones without need to change existing configuration. The code was heavily based on documentation and code created by samsyncro project, thought their documentation missed some important bits.
I'd really like to thank to Matthieu Patou for debugging problems of code I blindly wrote, because there were lot of issues (well it's hard to write code if you have no chance to test it).