Unable to acces the dial pad in a call using a Sip account

Hi sorry i don't know if should be like that but i think it is very necessary access the dial pad ones you are in the call maybe this is more a request then a bug I'm using the version 20200913-01 cr.ring installed from googleplay

if i dial from other devices to the android account in this case 6016 I'm unavailable to access the dial pad like i show next

and if i dial out to that othe devices or anyone else it can be accesses

it should be accessible at any time on the call right ?

plus in the pc version there is a transfer button, if it just could be accessible from the android version to , sorry tank you for all of your work !