All, I see this topic has been brought up a few times here and it seems every time it gets dropped. I am trying to configure my SIP trunks from my CS1000 to Cisco to pass DTMF presses. I have trunking working and can get calls to go in both directions. I can get DTMF to pass from my Cisco to the CS1000, but I am not getting DTMF from the CS1000 to Cisco. Any advice or where to look? Does anyone have anything like this set up? Thanks for your help!