I'm having problems with DTMF on outgoing DAHDI. See https://issues.asterisk.org/view.php?id=18084 I've tested that the dtmf comes into * correctly. I know that it works if I use SIP outbound. But it doesn't work if I use DAHDI outbound. I'd like to figure out what the called party on outbound DAHDI does receive. Is there any PSTN number that echoes received DTMF tones? I've found some dtmf echo tests for sip, but none on pstn. Thanks, sean