I currently have a point-to-point T1 circuit between 2 3662 routers. 6 of the channels of the T1 circuit are multiplexed for voice to our phone system. We are using the T1 multiflex cards for this. I want to be able to add a 2nd T1 circuit and use multilink PPP to bond them together. Does anyone know if I can multilink the new T1 and the existing T1 - even with the voice channels?