If I send an email to an iphone user which contains a phone number - the iphone seems to figure out that's a likely phone number that can be clicked and the call goes through.. Cool. But now my users would like me to go a step further - which is that the phone would call the number, pause say five seconds and then enter a conference code. The issue is that this is an emergency conference line so people are furiously fumbling with their iphone and trying to punch in the code at 3 in the morning to access the conference. With a modem I recall we would dial a number then enter commas and then add more digits which the modem would send. Any way to do a similar operation from iphone messaging?