Hi kirill, YOu dont need SDP in a invite, you can add the SDP in the ACK instead if that's supported by the UA's that's involved. My 1 cent without any form of looking at the pcap. - Atle * Kirill Kudin <kirill.kudin@gmail.com> [070414 11:21]:Ethereal told me that your INVITE package is incorrect. Please add SDP body to this package. - Kirill On 4/14/07, Goh, Tee-Yong <gohty@m1.com.sg> wrote:Hi Kirill, Thanks for your reply. May i seek your advice how or where can i find the verison of the SER that i am using. Acutally i am using SER-0.9.6. I have sent you an attachment that i got from Ethereal which i was running the simulation. Please advice as this is the only portion that i am left with. Thanks. Regards, Howard ________________________________ From: Kirill Kudin [mailto:kirill.kudin@gmail.com] Sent: Sat 4/14/2007 4:38 PM To: Goh, Tee-Yong Cc: Serusers@lists.iptel.org Subject: Re: [Serusers] Respond to INVITE message for SER What is the version of your SER and what is the client name? Could you please also provide content of this INVITE message? - Kirill On 4/14/07, Goh, Tee-Yong <gohty@m1.com.sg> wrote: Dear all, May i seek your advice. My INVITE message sending to the SER is not successful with error "Status: 500". The SER does not respond back a 200 OK back to the client. Please kindly advice if anyone of you have the solution or encounter such problem before? Thanks. Regards, Howard ________________________________ This email (including any attachment) is subject to the following disclaimer: http://m1.com.sg/M1/misc/disclaimer ________________________________ _______________________________________________ Serusers mailing list Serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers This email (including any attachment) is subject to the following disclaimer: http://m1.com.sg/M1/misc/disclaimer_______________________________________________ Serusers mailing list Serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers_______________________________________________ Serusers mailing list Serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers