Salam, I searched the internet many times to find the MI Command (Datagram or FIFO) to send a message to a SIP user, even that it is mentioned so in the opensips documentation.
Any one can help please?
I found it and I'll post it hear, it might be useful for someone else.
sudo opensipsctl fifo t_uac_dlg MESSAGE "sip:[email protected]" . . "\"From: sip:[email protected]\r\nTo: sip:[email protected]\r\nContent-Type: text/plain\r\n"\" 123456