Am 24.03.2010 16:31, schrieb Fabio Pietrosanti (naif): > Unfortunately it's not possible to use wireshark. > > Packets are directly sent to GPRS wan interface of a Nokia S60 phone > runing Symbian OS where no single network analyzer exists. > My problems exists only in GPRS and UMTS but not in Wifi (that's the > only environment where i can use a network analyzer). Sounds like either there is bug somewhere (pjsip or S60) when using the GPRS interface or the operator uses a strange NAT/FW. If it is a NAT/FW problem than it is strange as usually sending is fine, but receiving makes problems. some ideas: - test with another operator - maye the operator has a FW with broken SIP ALG. You could try putting freeswitch on another port (not 5060) and make sure that pjsip is alos not using port 5060 - if it is a NAT/FW problem of the operator you should be able to trigger it also by using for example pjsip on a PC and use the mobile phone as GRPS-dial-up for the PC. regards klaus
