Techroutes access product TDM OVER IP is a cost effective solution for the traditional telecom services migrate to the IP packet networking technology, Techroutes access product TDM OVR IP adopts the innovative TDM over IP technology, with IP circuit emulation that supports transportation of 01/02/04/08/16 E1 over FE port and optical SFP port. The uplink ports and user data ports are IEEE 802.3 compliant, 10/100 auto‐sensed Ethernet ports.