Copy and paste DTMF tones into the in-call keypad
You cannot copy and paste a text string of numbers (or letters) and paste them into the in-call keypad to be converted to DTMF tones in Teams, as you could in Skype for Business. This is particularly important when using Teams calling to dial into a 3rd party dial-in conferencing service, and having to enter a meeting ID. Currently this must be re-typed into the Teams DTMF keypad, which is a clunky user experience.
Ben Cromie commented
This appears to have been included as a feature update, and now works (i.e. paste alpha-numeric text strings into keypad as DTMF tones mid-call). Running Teams v1.3.00.4461.