3Com DSA-3CV1100-02 service manual Mbaud, Mbps, MiniDIN

148GLOSSARY

LC	Line Card. A card in the VCN AC chassis; the card provides an Ethernet
	port and an LMI port.
LED	Light Emitting Diode. A semi-conductor device that converts electrical
	energy into light, used, for example, for the activity lights on the VCN
	AC and VCN AP units and appears in green or orange.
LMA	Local Management Access.
MAC	Media Access Control. A protocol that defines the way workstations
	gain access to transmission media, most widely used in reference to
	LANs. For IEEE LANs, the MAC layer is the lower sublayer of the data
	link layer protocol.
MAC address	Media Access Control address; also called hardware or physical address.
	A data link layer address associated with a particular LAN device. MAC
	addresses are 6 bytes long.
Mbaud	Megabaud
Mbps	Megabits per second.
MiniDIN	A connector which connects the VCN AC to the Local Management
	Interface.
NA	Not Applicable. Wherever this appears, it means that the specified
	condition is irrelevant for the case mentioned.
NAT	Network Address Translation. The process of converting between IP
	addresses used within an Intranet or other private network and Internet
	IP addresses. This approach makes it possible to use a large number of
	addresses within the local Intranet without depleting the limited
	number of available numeric Internet IP addresses.
NAU	Network Access Unit. In this case it is the unit installed in a room which
	enables both voice and high speed data services simultaneously on the
	existing telephone line. Another name for the VCN AP.
NCU	Network Concentration Unit. Another name for the VCN AC.
NIC	Network Interface Card. An expansion card or other device used to
	connect a computer to a local area network.
NSP	Network Service Provider