iPhone hacker eok writes to let me know that he and Samuel have gotten SIP registration and signalization working. They took a few mobile terminal shots, but the real work is being done via ssh. Samuel is working on connecting the audio in/out to the pjSIP. If you have iPhone or iPod touch coding skills and want to get involved in the project, connect to #touchmods on irc.undernet.org. It looks like most of the work will be done on European time.
Oh, and if anyone is giving away free iPods to worthy developers? eok recommends that Samuel gets one first. He writes that Samuel has been the driving force behind the compilation.