A DSLAM, or Digital Subscriber Line Access Multiplexer, is a network device used by Internet Service Providers (ISPs) to connect multiple DSL lines to a high-speed internet backbone. It allows for the aggregation of data from various users, enabling them to access the internet simultaneously while maintaining efficient bandwidth management. The DSLAM converts digital signals from DSL modems into a format suitable for transmission over the internet. By doing this, it helps deliver high-speed internet services to homes and businesses, making it a crucial component in the infrastructure of modern telecommunications.