Your provider is sending correct dtmf and there is no mismatch. Can you test few changes 1. Disable video mode from phone then test a call and check dtmf status. 2.check by applying other dtmf method like sip notify. 3.if that does not work then it most look like issue with the phone firmware. Which sip firmware are you using?
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.