Allied Telesis AT 210TS

Allied Telesis AT 210TS ... the workstation, bringing thin Ethernet or Unshielded Twisted Pair (UTP) wiring directly to the workstation. With UTP and inexpensive coax network media, distances up to 100 meters between workstations can be supported using UTP, and up to 185 meters using coax. The AT-210TS transceivers incorporate other functions that offer improved network reliability for workstations. The 10BaseT link integrity test function provides a continuous test of the connection to the multiport repeater. A test pulse is periodically transmitted and expected at the companion transceiver's receive side. If the pulse is not seen on the receive side, the transceiver is placed into link test fail mode. Normal operation of the transmit side is inhibited and the "Link" LED is turned off. Normal operation is resumed when the link is re-established by the reception of a valid packet or two valid link pulses. 10BaseT transceivers also address the polarity of the receive pair wiring. In less than one second, the UTP transceiver automatically "rolls" the wire pair and allows for the proper operation of the transceiver. Also, the "Polarity" indicator on AT-210TS transceivers is not illuminated when the circuitry has transposed the receive pair.