Hi I have pjsip and use it as SIP client with 2 SIP accounts. First account is local Asterisk at internal 192.168.x.x. Second account is public in Internet at 212.x.x.x.First account does not need STUN and second needs STUN. If I activate STUN then second works but first not. If I deactivate STUN, first works but second not. I looked at other SIP-clients like phoner.de They use STUN configuration on account basis. Could you add STUN on account configuration (for each account) or at least a flag in the account to disable/enable STUN for each account or do you have a workaround? Michael.