Method and system for mapping virtual connections to asymmetric digital subscriber line latency paths

An access node in an asymmetric data transmission system, the access node comprising in combination:

• a transport network interface for connecting to a transport network;
• a virtual channel/virtual path interface for managing virtual channels and virtual paths used on a virtual connection;
• a control plane for establishing calls, establishing circuits and managing virtual connections;
• a plurality of latency interfaces for establishing fast latency paths and interleaved latency paths;
• and
• a plurality of asymmetric digital subscriber line transmission unit-central interfaces for connecting the transport network to a plurality of asymmetric digital subscriber line devices at a plurality of asymmetric digital subscribed line transmission unit-remote interfaces.

A latency mapping system for an asymmetric data transmission system, comprising in combination:

• a latency mapping policy for mapping a desired transport network service category to an asymmetric digital subscriber line latency path;
• a connection admission control function for checking the mapping policy and calling a latency mapping function to establish a virtual connection including a desired latency path for a desired service category;
• and
• a latency mapping function for establishing a virtual connection including a desired latency path for a desired service category between a transport network interface port and an asymmetric digital subscriber line device latency interface port.

A method for latency path mapping in an asymmetric data transmission system, comprising:

• receiving a call setup message from an asynchronous transport mode network on an asymmetric digital subscriber line access node on a first connection to request a desired service category on a virtual connection between the asymmetric digital subscriber line access node connected to the asynchronous transport mode network and an asymmetric digital subscriber line service module connected to a premise distribution network;
• checking a latency mapping policy on the asymmetric digital subscriber line access node to determine a desired latency mapping for the virtual connection based on the desired service category;
• creating the desired latency mapping for the virtual connection between the asymmetric digital subscriber line access node and the asymmetric digital subscriber line service module over a second connection by creating the desired latency mapping between an asynchronous transport mode port and a latency interface port on an asymmetric digital subscriber line transmission unit-central interface on the asymmetric digital subscriber line access node, thereby providing a virtual connection with a desired service category including a desired latency mapping between the asynchronous transport mode network and the customer premise distribution network via the asymmetric digital subscriber line access node and the asymmetric digital subscriber line service module.