hello, Since a few days I'm looking for the 'best' way to get the telco "error" messages when dialing wrong/busy/non-existing numbers. I can't get it to work on E1 or ISDN BRI. An alternative option is to detect the hangup_cause (no problem here) and play our own voice prompts. I would like to avoid this to make sure the users experience the same behaviour as before. (with the 'traditional PBX') I have tried changing the priindication setting (tried inband,outofband and passthrough) but this didn't change anything. Does anyone have any idea as to how I can debug this? cheers, stoffell