Loop Telecom NA has a wide range of TDM and Ethernet Hybrid devices to support connecting your edge devices to the rest of your network.
Multiservice Access TDM over Ethernet - IP6704A
E1 / T1 and DTE / TDMoE - IP6702A
PTN Carrier Ethernet Access Node GE E1 / T1 - IP6750
Ethernet and 4 E1 Router - IP6510-LN
Router bridge over E1 - IP6610