3Com NJ220 manual Using a particular port

2CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK

•MAC filtering

•802.1x port security

•User-configured VLAN IDs for management packets

•Port-based “calendar” function

About the IntelliJack The following diagram shows the front view of the IntelliJack:

1	Switched ports with LEDs	Allow up to four devices to be connected to the network.
		A green LED indicates connection status when a device is
		using a particular port.
		Port number 1 is also a power-forwarding port; it can be
		used with any standard networking device as well as to
		power a VoIP telephone on a network that uses IEEE
		802.3af-compatible Power Over Ethernet. An additional
		LED indicates when the port is forwarding power to a
		device connected to that port.
2	Slot for adapter plate	Can be fitted with an adapter plate, which can be installed
		with up to two pass-through ports.
3	Adapter plate with	Can be used for voice or other networking applications.
	installed pass-through port	The port bypasses the functionality of the switch, allowing
	connector	you to set up a connection to a separate network segment
		or to connect to an analog or digital PBX telephone.
		The adapter plates are available from 3Com. However, you
		must purchase the connectors from the manufacturer. See
		“Installing the Adapter Plate and Pass-Through Ports” on
		page 8 for more information.