I need to network four MICS together. I have point to point T1's from the main site to each of the other three sites that are exhisting for data. The customer said I could have 6-8 channels off of each of them so I was going to take an Adtran TSU 120 and break them out. However I was told the MICS in my main site would only support 3 DTI cards. I need four because I will have a PRI in the main site also. Has anyone got any ideas. One of the sites don't need but a couple of talk paths and all I am interested in is having them talk I don't need centralized voicemail on nothing like that. Could I possibly use a E&M trunk card to my advantage here some how. I am just trying to figure out how to do this utilizing their exhisting T1's and have all four sites talk to each other. Any input would be appreciated.