Hello DavidG,
The discussion within this topic is about a warning message in regards the future D60 feature.
At no point have we discussed any DTMF issues or an issue with the expansion module.
I had asked you in the past to follow up your own posts => here<= via your Polycom reseller but to my knowledge have not done so.
Unfortunately many users decide to not follow this up the officially outlined way and therefore depriving other users and Polycom support to fix any issues if they exist.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
