Has anyone on the list looked at text messaging to SIP UA using Unicode rather than ASCII? I have an application that will interface FreeSWITCH to a Chinese PBX using SIP and will require text messaging support. The PBX currently does not support the MESSAGE method so there is some flexibility in the details of the interface, but I would like to keep it as interoperable as possible. It seems like UTF-8 encoding is commonly used with SMTP and HTTP -- I assume that would follow for SIP as well. It should be as simple as this: MESSAGE sip:9997252000@192.168.100.133:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.100.2:5060;rport;branch=z9hG4bK890156501 From: "Dispatcher" <sip:9990000000@192.168.100.2:5060>;tag=1425782651 To: <sip:9997252000@192.168.100.133:5060> Call-ID: 2285408318@192.168.100.2:5060 CSeq: 1000 MESSAGE Max-Forwards: 70 User-Agent: Message Dispatch System Content-Type: text/plain; charset=UTF-8 Content-Length: 9 æ¥æ¬èª Thanks, Ron