As a cost effective solution for traditional telecom services to migrate to IP packet networking technology, H0EL-EthMux adopts the innovative TDM over IP technology, it transports the legacy E1 data through the existing IP network. H0EL-EthMux is the second generation of the TDM over IP equipment with IP circuit emulation that supports transportation of E1 and local Ethernet ports over the IP network. The uplink port and user data ports are IEEE 802.3 compliant, 10/100BaseT auto-sensed Ethernet port. The state-of-the-art design provides the highest availability with accurate timing signal and data bit stream reconstruction. Predefined system parameter profiles that according to different application requirement; ultimately simplify the installation process and save maintenance costs. Telecom and Enterprise users can save a lot of access and equipment costs and generate new revenue by offering different types of service over existing Ethernet networks. It is also suitable for connecting to wireless equipment to achieve fast deployment of E1 services. One particular application is to build E1 links with low cost Wireless LAN bridges, replacing much more costly microwave radios. Operators can use H0EL-EthMux to provide legacy TDM services over wired or wireless packet network.