How do I insert a wait in dialing string on WP7 Trophy

[ncalsuz]

I was able to figure out how to insert a pause (its the comma) but I need to insert a wait, which is where it dials part of the number, hits the wait and after the prompt sends the part of the number after the wait.  It looks like similar to the P for pause or W for wait on those other operating systems like RIM and Android.

[thezoltar]

Add more commas, each one is a specified time unit. More commas more time...,,,,