I'm fairly new to connecting locations. We will be adding a new office/location to our network and I have to figure out how. We currently have a 3745 Router at our Main Data Center and a 3550 at the new location. From my understanding, we are connecting the new location via T1 P2P. So my question is on our Main 3745 we will need to order a WIC-1DSU-T1-V2, but I'm unsure if we need one for the 3550. Any insight will be helpful.