有图有真相：Sipsorcery里加voipdiscount的方法 mc33612011-08-18 00:17:59

num = req.URI.User.to_s
num = num.gsub(/\\A011/,'+')

if /\\A[2-9]\\d{6}\\Z/
    num = "+1212" + num
end

if /\\A\\+[^1]/
   sys.Dial(num + "@voipdiscount")
else
   sys.GoogleVoiceCall("me@gmail.com","password","2535551212", num, ".*",3)
end