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

可以把公路整条线型参数输入手机中并保存，在野外作业时查询坐标数据。-You can put the entire highway linear parameter input your phone and save the query coordinate data in field operations.