All, Here's the documentation from online: pj_status_t pjsua_conf_adjust_rx_level ( pjsua_conf_port_id slot, float level ) Adjust the signal level to be received from the specified port (to the bridge) by making it louder or quieter. Parameters: slot The conference bridge slot number. level Signal level adjustment. Value 1.0 means no level adjustment, while value 0 means to mute the port. Returns: PJ_SUCCESS on success, or the appropriate error code. So, what are the appropriate ranges for the value of level? Are they 0 to 1? Are the values absolutes or relative to current volume? I'm playing with pjsua application and not sure I can tell. I'd like to see how fine grain the control can be. Thanks, Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090306/318edc57/attachment.html>