I need to bring a few ATM T1's together into an IMA group. This is on a LS1010. I do not have the expensive C85MS-8T1-IMA module. I was wondering if its possible to bring the T1's into an external IMA device that will combine them into a DS3 or OC3 aggregate that I can shoot over to the LS1010. Does such a device exist? Expensive? Brian