# ACD Scalability: What is the Current Limitation?

Currently, a single LX controller can support a maximum of 100 IP agents and 150 Time Division Multiplexing (TDM) agents for a combined total of 250 agents. You cannot have more than 100 IP agents on a single LX controller in a single node environment due to blocking factors within the system. The IP gateway functionality is performed by the controller's Ethernet to TDM (E2T) card, which has a 128 channel limit. If the system has greater than 100 IP agents and 150 TDM agents, the 128 E2T channels could be exceeded in a high volume ACD site and result in blocking. However, you can work around this E2T limitation by using external 3300 digital trunking gateway controllers.

NOTE: LX controllers are not supported by the MiVoice Business system.

Related Topics

- Why is it a Problem?

- What is the Solution?

- What are the Advantages?

- Sample Configurations

- General Configuration Details