Thanks MC. Does anyone else have any knowledge on this subject ? I am trying to use a TDM over IP device to transport the T-1 over a 100Mg circuit between 2 offices. In theory it looks fairly straight forward.

One IDS 648 will be the master and the other the Slave. Clocking will be done by the master. Do i need to make a crossover cable going into the second location ? Or is it as simple as plugging in both sides and programming my T-1 type ?
I cant find much data on this subject.