Possible to dial phone numbers during phone call?

[Chase F]

Hello, is it possible to dial a number during a phone call?  What I'm asking is after I've dialed a phone number, I want to be able to press buttons on the phone keyboard to automatically navigate a message tree

[nanobrain]

The best approach is probably to put a comma into your number sequence will insert a 2-second wait at that point. Insert multiple commas if you need more time.