As Cisco's most widely deployed IP telephony port-enabled campus switch, the Cisco Catalyst 6500 Series offers two new 48-port 10/100/1000 Ethernet modules. The newest additions to the Cisco Catalyst 6500 Series Ethernet over copper module portfolio offer several industry firsts, including: the first 48-port 10/100/1000 Ethernet modules supporting field upgradable inline power, an integrated time domain reflectometer for cable fault detection, reducing the need for costly third-party network testing equipment.The WS-X6548V-GE-TX is designed for the premier wiring closet, enabled for Cisco inline power.