You can use the following example: INFO sip:[EMAIL PROTECTED] SIP/2.0 Via: SIP/2.0/UDP 10.33.37.78;branch=z9hG4bKacegEymGb From: <sip:[EMAIL PROTECTED]>;tag=1c5471 To: <sip:[EMAIL PROTECTED]>;tag=1c2603931974 Call-ID: [EMAIL PROTECTED] CSeq: 3166520 INFO Max-Forwards: 70 User-Agent: Audiocodes-Sip-Gateway-MP-104 FXS/v.4.20.354.591 Content-Type: application/dtmf-relay Content-Length: 26
Signal= 3 Duration= 250 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lim Han Shyong Sent: Wednesday, September 29, 2004 10:07 AM To: Sip-Implementors (E-mail) Subject: [Sip-implementors] SIP INFO for DTMF Dear All: Hi, i had try to implement the INFO message to carry DTMF tone, is there any example for me to refer.? 1. Here is the message that i generate , is that correct message? 2. The CSeq start from 2, should it start from 1 ? 3. The server receive first dtmf tone without error , but it show "unable to retrieve dtmf from INFO message" from second DTMF and above.. Any comment ? ************************** INFO sip:[EMAIL PROTECTED];transport=udp SIP/2.0 Call-ID: [EMAIL PROTECTED] CSeq: 2 INFO From: "HSL" <sip:[EMAIL PROTECTED]:5060;transport=udp>;tag=16765237 To: <sip:[EMAIL PROTECTED]>;tag=as1828c265 Via: SIP/2.0/UDP 192.168.0.212:5060 Signal: 6 Duration: 1000 Content-Type: application/dtmf-relay Content-Length: 0 ************************ Regards HSL _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors ************************************************************************************************************ This email and any files transmitted with it are confidential material. They are intended solely for the use of the designated individual or entity to whom they are addressed. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination,use, distribution or copying of this communication is strictly prohibited and may be unlawful. If you have received this email in error please notify [EMAIL PROTECTED] and permanently delete the e-mail and files. *********************************************************************************************************** _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
