看看人家是如何应用各种模式作为应急的吧！！！
http://www.irescintl.com/to provide communication in an event of disaster .iresc system is design to duplicate voip operation , it will provide alternatives in case one system fails. the other system will pick up , here are the iresc voip operation listing for communication.
iresc on skype username iresc intl
iresc on echolink presently using node # 257246 -9z4fz-r
iresc on eqso room iresc comming soon iresc server eqso
iresc on ipox5 server under construction
iresc on cq100 40 meters 7.205
iresc on hamsphere 160 meters 1.860
