CLECs will work with their CenturyLink Account Team which consists of a Sales Team and a Service Team when assistance is needed in selecting the most appropriate services for specific situations. To do this, CLECs must be familiar with Local Interconnection Service (LIS) Trunking. In this Module, you will be given an overview of LIS Trunking that includes the following Topics: Definition of LIS Trunking, Other Telecommunications Providers, and Exchange of Local/EAS Traffic.