I have a 2811 router configured as an H323 with FXO ports going to the PSTN. I also have CallManager 6.1 and I am trying to figure out if there is a way to configure call waiting on the FXO port so that when a user is on the phone and a second call comes in it will go straight to voicemail. That is how phones are configured on our other VoIP networks and that works fine. I am just wondering if there is a way to configure call waiting to behave the same way by being passed to the Callmanager which would recognize the user is on the phone and go straight to voicemail. Thank you in advance.