Hello PjSip-community, My PJSip application launches multiple clients, each one bound at a different IF of the host, i.e. a different IP address. For example Ua-1 is on address 10.0.2.15 on port 5060 Ua-2 is on address 10.0.2.16 on port 5060 Ua-3 is on address 10.0.2.17 on port 5060 The clients work correctly if they are configured with UDP. But this does not work with TCP: The PJSip stack does not allow to create more than one TCP transport. The call of pjsua_transport_create(PJSIP_TRANSPORT_TCP, &cfg, NULL); results in an error: 16:19:42.373 pjsua_core.c Error creating SIP TCP listener: Object with the same type exists (PJSIP_ETYPEEXISTS) [status=171002] Is this a bug of the PjSip stack? Or is there a reason for not allowing more than one TCP transport? Thanks for any hint, Alejandro