Hi, I want to do this : originate sofia/gateways/carrier1/xxxxx &record(/tmp/file.wav) However, I got Bye without any cause from the carrier1 after about 1 minute, I traced there were no RTP packets sent out from my BOX. If there any chance the record() dp_tools can send fake audio? I tried supress_cng = true/false, and Channel variable bridge_generate_comfort_noise. no luck with that. And I think maybe these params only work on a bridged channel, but I only have one party. And it seems that there is param can do this on conference. 0 autoload_configs/conference.conf.xml 41 <!--Can be | delim of waste| mute|deaf waste will always transmit data to each channel 1 autoload_configs/conference.conf.xml 43 <!--<param name="member- flags" value="waste"/>--> Thanks for help. Regards, Seven