Hello, I am quite new to using pjsip and so my queries are very basic! I am wondering how to connect 2 machines in the same LAN using IP address for making a pc2pc call in a server less configuration! >From the manual, it is given to use ./pjsua sip:"ip address of sip url" Is it possible to directly call a host with only ip-address since the options for making a call wants the ip-addr of a remote sip url? If it is not possible, then how to setup a sip url for receiving a call? The error is given as: 18:24:56.267 pjsua_call.c Unable to make call: Invalid Request URI (PJSIP_EINVALIDREQURI) [status=171042] Thanks, Abhishek