Hi When I call from 1 RTC Client to another without Asterisk everything use to be fine but when asterisk is there as a Registrar a problem use to occur in many calls, Caller can hear the voice of the receiving side but the receiver doesnt get any voice for about 5 to 10 seconds, conversation will become two way after 5 - 10 seconds. Everything use to be fine if Asterisk isnt there. Everything use to be fine if I use SJPhone or XLite as SIP UA. Does anybody ever had this problem ? Any suggestions will be higly apreciated Thanx in Advance __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com