PSEUDO WIRE, REAL BRIDGE.

The article discusses various technologies used with data transmission systems. Ethernet always has given the telecom industry fits. Even as it became a corporate enterprise standard for data networking, telecom companies favored frame relay and Asynchronous Transfer Mode for answering the networking needs of those customers. Their experience with packet infrastructure has been much the same. While all Internet protocol (IP) carriers such as Level 3 Communications Inc. emerged years ago, many incumbent local exchange carriers have been much slower to invest in IP. INSET: Pseudo wire cheat sheet.