Hello and thanks in advance for any advice and help you can provide me ... I can't seem to get a straight answer on this project and I'm really hoping to get some help with it here.
I'm working on a project to replace point-to-point T-1's with an ethernet WAN that utilizes 40-100Mbps links between sites. Data is flowing over the new WAN without a problem, but we can't remove the old T-1's because our tired old phone system still requires T-1's for office to office calling. What I'd like to do is configure my routers to 'emulate' a T-1 for these sites so that we can retire the T-1 circuits, but essentially provide T-1 handoffs to our phone system.
The T-1's are currently connected using Adtran CSU/DSU units that split voice and data channels (most sites have 14 voice and 10 data - remember our data uses the new ethernet WAN so the 10 data channels are just a backup if the new WAN has an issue). I was told by several people that this can't be done, yet some other people have told me it's no problem at all ... I'm hoping it can be done (and hopefully using the equipment I already have - see below):
Our main site has a 3845 and the other sites have 2821 routers. For testing purposes I have (2) VWIC2-2MFT-T1/E1 cards and (2) PVDM2-16 modules. I feel like I have the pieces, but I just don't know how to configure them to do what I need.