Notification in Grandtream UCM6204


Dear Grandstream.
How to change Notification “All circuits are busy now. Please try again later” in Grandstream UCM6204.
Thanks and Best Regards,


upload new voice file under custom prompt and then
go to PBX settining—>Call Failure Tone Setting—>General Call Failure Tones–>> Trunk Busy and select your custom Prompt


I have configured successfully.
Thanks very much