3Com NJ240FX manual Features

Features
Local power supply	Required for networks that do not support Power Over Ethernet
Voice Over IP (VoIP)	Compatible with VoIP standard.
Power forwarding	Power forwarding Port number 1 can be used with any standard
	networking device as well as to power a device such as a VoIP
	telephone on a network that uses IEEE 802.3af-compatible Power
	Over Ethernet.
RMON Counters
InUnicasts	Total valid frames received with a unicast Destination Address.
	A valid frame has a good FCS and its size is greater than 64
	bytes and less than 1518 for non tagged frames, 1522 for
	tagged frames, or 1535 if MaxFrameSize =1 (set in global
	control register).
InBroadcasts	Total valid frames received with destination address equal to
	FF:FF:FF:FF:FF:FF.
InPause	Total pause frames received.
InMulticasts	Total valid frames received with multicast destination address that
	are not counted in InBroadcasts or InPause.
InFCSErr	Total frames received with a valid length and an invalid FCS.
AlignErr	Total frames received with valid length that have an invalid FCS
	and a non-integral number of octets.
InGoodOctets	Total data octets received in frames with a valid FCS. Undersize
	and oversize frames are included. The count includes the FCS
	but not the preamble.
InBadOctets	Total data octets received in frames with an invalid FCS;
	fragments and jabbers are included, The count includes the FCS
	but not the preamble.
Undersize	Total frames received with a length	of less than 64 octets but a
	valid FCS.
Fragments	Total frames received with a length	of less than 64 octets and
	an invalid FCS
In64Octets	Total frames received with a length	of exactly 64 octets,
	including those with errors.
In127Octets	Total frames received with a length	of between 65 and 127
	octets inclusive, including those with errors.
In255Octets	Total frames received with a length	of between 128 and 255
	octets inclusive, including those with errors.
In511Octets	Total frames received with a length	of between 256 and 511
	octets inclusive, including those with errors.
In1023Octets	Total frames received with a length	of between 512 and 1023
	octets inclusive, including those with errors.
InMaxOctets	Total frames received with a length	of between 1024 and
	MaxSize octets inclusive, including those with errors.

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