Abstract: Disclosed is an automatic configuration system and method for automatically configuring the time slots on a time division multiplexing connection line that is dedicated for frame relay service. Generally, the system and method described involve the determination of potential dedicated time slots configured at the central office for frame relay traffic. Next, a level of confidence is determined regarding the potential dedicated time slots. If the level of confidence is high, then the system attempts to establish a local management interface with the central office frame relay switch, service, or similar device over the potential dedicated time slots. Once the local management interface is established using the potential dedicated time slots, then these time slots are stored as the new configuration for frame relay traffic by the frame relay DSU.