While the pace of change in network technology continues to increase, global deregulation of telecommunications has allowed more service providers to compete for data, voice, and video network services. Only companies who have designed their network infrastructures with these factors in mind will be able to benefit from the lower prices caused by increased competition and protect themselves from "technology lockout" in the future.Cisco offers its new four-port 10BaseT/100BaseTX autosensing switch module for Catalyst 2912MF XL and 2924M XL, ISL/802. The Catalyst 2900 series XL modules can add port density and fiber-optic connectivity to a Catalyst 2900 series XL network.