Plug the LANID into a wall jack or a patch panel.  With a push of a button, it will determine whether the jack is connected to a live Ethernet device and whether that device supports the following topologies and capabilities:

• Auto negotiation

• 100BASE-Tx full duplex

• 100BASE-Tx half duplex

• 10BASE-T full duplex

• 10BASE-T half duplex

• 100BASE-T4

Moreover, the LANID can also act as a network device, negotiating with other LAN devices to determine faults.  The "auto-negotiation" function provides automatic speed matching for multi-speed devices, allowing devices to configure to the best possible mode of operation over a link.  When linked up with another LAN device, the LANID will provide the following information about that device:

• Whether the link is up or not

• Whether the device is transmitting a packet or not

• Whether the device is working in full duplex mode or half duplex mode

• Whether the device is operating in 100BASE-Tx, 10BASE-T or 100BASE-T4 mode

• Whether a data transmission error has occurred
  
  
  　

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The compact "pen style" design provides the user with optimum convenience and portability.

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