Select Alternate Number in Speed Dial
If a contact has multiple numbers and they are added to Speed Dial, you can only call their "main" number from Speed Dial. In order to call the other number form speed dial you have to add that 2nd number as a whole new contact and add that new contact to your speed dial. It would be nice to click the 3 dots in a speed dial contact and be able to call the other number associated with that contact from Speed Dial.
It's amusing that you can select the number you want to call everywhere else except: (1) Speed Dial and (2) when adding a person to a call.
So the workaround to "quickly" call somebody is to use contacts or to just use the search bar, then click the person, then click the call button, then click the number but that makes the Speed Dial area useless.
The other workaround is to use Outlook to look up a person's phone number whenever you want to call them which sucks.
C. Atwood commented
It is frustrating that a feature request like this, which should be a no-brainer, is buried within so many other speed dial feature request. For those of us that are using Teams as our primary PSTN connection, we REALLY need a minimum viable speed dial. This includes this feature, but also we need you to fix the missing user managed address book that needs to go along with the speed dial. At least connect to a users Outlook contacts for a user managed address book.
Dave Friederichs commented
As far as I can tell, dialing from the "Speed Dial" cards only enables calling the recipient through Teams, not a different phone (mobile, work, etc.). Understand this can be done through the Contacts section, but having to go there defeats the purpose of the Speed Dial cards. Skype has similar functionality - when you click the "phone" button you have the choice of number/method.