jsr-180 (SIP) 实现源码。可以在真实手机上使用，但需要获得公网地址，只实现了UDP传输。只可研究学习，不可用于商业用途。-JSR-180 (SIP) to achieve source. In real phone use, but need public address, the only achieved UDP transmission. Learning can only study and may not be used for commercial purposes.

The source code for this package is located in src/gov/nist/sip/proxy. The proxy is a pure JAIN-SIP application: it does not need proprietary nist-sip classes in addition of those defined in JAIN-SIP 1.1, you can substitute the NIST-SIP stack b

First of all, the Applet-phone is a SIP User-Agent with audio and text messaging capabilities. But i s also embedded in an applet where you can use it as usual if your firewall allow you to use the UDP transport. If not, you can use TCP to carr