I'm configuring my system to do "Dial-Out". I have the correct CSS set on the SIP trunk in between the Call Manager and MP 8 and have the "guest" profile in MP 8 set to do the "Dial Out" feature. I am able to make calls to both my CUCM phones and externally to Mobile Phones but the weird thing is that when I press 1 to attend meeting on my Mobile Phone or 2 to have the system stop calling me, it does nothing. It just repeats the menu again. On my Cisco phone when I press 1, I am able to attend the meeting. So it seems as though the dial pad on the Mobile Phone does not talk to Meeting Place correctly. Any ideas as to why this might be happening?