ATM subscriber access multiplexer (ASAM)
An ATM Subscriber Access Multiplexer( ASAM) is a switching office( CO) multiplexer that supports multiple DSL ports with different network interfaces.
The ASAM sends and receives subscriber data over the existing copper pairs and multiplexes all traffic to the Internet on a single high-speed line. The ATM Subscriber Access Multiplexer (ASAM) is functionally similar to the Digital Subscriber Line Access Multiplexer( DSLAM).