Hi, I am planning to use PJSUA library as is to make multiple SIP calls simultaneously (each registered to a different user account), with each wired to a different audio device on my side of the machine. Does any guru here knows off the top of the head if this can be done at all? Because if this can't be done without modifying the PJSUA library then that can save me time from trying to use the PJSUA library as is. Thank you in advance. Regards, Chiang