questions about build sip protocol stack bundle


Hi, Thanks a lot to Emil:), you are so kind.
Hope to get your help:
1. As for the sip protocol, those files in the folder:
/sip-communicator/src/net/java/sip/communicator/impl/protocol/sip are just
all the necessary sip protocol stack implementation programming files?
2. If I build this folder above into aa1.jar with this existed in the same folder, and this gotten bundle aa1.jar
is just the sip protocol stack bundle and can communicate with another
outside SIP agent properlly, is this right? and this bundle aa1.jar is as
User Agent Client for SIP?

Best Regards!