Hello, We have implemented a web based client based on the jsSIP library to do audio/video and chat via SIP over websocket and freeswitch. With this client it is also possible to chat only. When chatting between two clients, the Call-ID in the message is different for each message. MESSAGE sip:1008@192.168.0.123 SIP/2.0 Via: SIP/2.0/WSS rfboa1c9gg6q.invalid;branch=z9hG4bK2512434 Max-Forwards: 69 To: <sip:1008@192.168.0.123> From: <sip:192.168.0.123>;tag=e472qkncp0 Call-ID: 0ggfl2u355ebrf77jsrq <—— always different CSeq: 521 MESSAGE sessionId: some uuid Content-Type: text/plain Allow: INVITE,ACK,CANCEL,BYE,UPDATE,MESSAGE,OPTIONS Supported: outbound User-Agent: JsSIP 0.6.0 Content-Length: 2 First problem: As the Call-ID is different for each message, I cannot group the messages to a conversation. Second problem: I want to store the chat conversation in the database and link it to a CDR. But there is no CDR written for the conversation. As I can see in the RFC (https://www.ietf.org/rfc/rfc3428.txt) on page 3, it should also be possible to create a dialog and then send all messages in context of this dialog. I assume this means, it is possible to establish a chat only (INVITE) call and then send all messages in context of the call. If there is a call then freeswitch will also write a cdr and if I can send messages in context of that call I can group them to a conversation, insert it to the db and link it to the cdr. How can I do this with freeswitch? Thanks Markus