Hi All, I am using ser 0.9.6, and refer the doc (http://www.iptel.org/ser/doc/seruser/seruser.html#CONDITIONS) and I want to use number 11 to 19 for pstn number, but in the first step to verify the pstn number failed. my code in ser.cfg, ******************************************* case 1: test sip client register number is 11 Sip uri is 11(a)192.168.5.1 if(uri=~"^sip:1[1-9]@"){ log(1,"LOG: number is 11-19\n") }else{ log(1,"LOG: NOT 11-19\n") } Result is "NOT 11-19" ******************************************* case 2: test sip client register number is 11 Sip uri is 11(a)192.168.5.1 if(uri=~"^sip:1[1-9]"){ log(1,"LOG: number is 11-19\n") }else{ log(1,"LOG: NOT 11-19\n") } Result is "number is 11-19" case 3: test sip client register number is ab Sip uri is ab(a)192.168.5.1 if(uri=~"^sip:1[1-9]"){ log(1,"LOG: number is 11-19\n") }else{ log(1,"LOG: NOT 11-19\n") } Result is "number is 11-19" ******************************************* Seems the character @ cause the incorrect result .? Did anyone experience this problem before? Or there is something wrong in my ser.cfg ? Please tell me what should I do to configure it properly? Thanks, Jimmy