[hamagc]

per androidforums:

Originally Posted by http://androidforums.com/faqs/69022-phone-dialing-pause-wait-symbols.html

For those who need pause and wait characters, here is what I found worked after much T&E:

Pause - waits a few seconds before proceeding: use a comma

Wait - requires action by caller to proceed: use a semicolon

When you dial a contact with the Wait symbol, a pop up window will come up to ask you if you want to enter the next set of numbers.

If you are entering the contact using the Android keypad, the bottom left key will be marked "*#(" - when you select it a new keypad comes up which allows you to pick "Pause", "Wait" or other keys.

Hope it saves others digging...