100BASE-TX Network
2.3100BASE-TX NETWORK
The two RJ21 connectors on the front panel of the 2H253-25R each provide 12 fixed ports (ports 1 through 24) that support Category 5 UTP cabling. The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-TX Fast Ethernet network requirements for the devices to operate at 100 Mbps. Refer to the Cabletron Systems Cabling Guide for details.
The fixed ports of the 2H253-25R support Category 5 UTP cabling that has an impedance between 85 and 111 ohms.
The 2H253-25R is capable of operating at either 10 or 100 Mbps. When the port is configured for Auto-Negotiation, the 2H253-25R automatically senses the speed of the other device and adjusts its speed accordingly.
