System and method for connecting a call with an interworking system

A method of operating an interworking system for connecting a call having user communications and call signaling, the method comprising:

• receiving a first control message from a signaling processor into an interworking unit wherein the first control message indicates digital signaling processing requirements for the call;
• receiving the user communications into the interworking unit;
• in the interworking unit, interworking the user communications between a time division multiplex connection and an asynchronous transfer mode connection,
• in the interworking unit, applying digital signaling processing to the user communications based on the first control message;
• receiving a second control message from the signaling processor into an asynchronous transfer mode switch wherein the second control message indicates an outgoing connection;
• receiving and switching the user communications from the asynchronous transfer mode connection from the interworking unit to the outbound connection based on the second control message;
• receiving a third control message from the signaling processor into a service platform wherein the third control message indicates an enhanced service to apply for the call;
• and
• in the service platform, providing the enhanced service to the user communications for the call based on the third control message, wherein the enhanced service comprises voice recognition or tone detection.