As close as I can tell, you can use the iphone's keypad to enter "key tones" during a call (such as when navigating a phone tree), but when you begin talking, the keypad is then muted, so you can no longer use the keypad. I need to be able to enter a keypad tone after I have spoken, such as when leaving a voicemail and copying it to other subscribers on the same pbx system. However, when I try to do this, either the iphone is not transmitting the tones or the system cannot pick them up.
Is this a "problem" with the iphone, and if so, is there a solution?
Is this a "problem" with the iphone, and if so, is there a solution?