SWAN 2 Concentrator Installation and Support Guide
Glossary
SWAN 2 Concentrator Installation and Support Guide—429593-010
Glossary-3
full-duplex
(MAC) address. The SWAN 2 concentrator contains FIR information its WAN LB, LAN 
LB, power supply, and chassis/midplane components. 
full-duplex. Transmission permitted in both directions at the same time over a data 
communications line. See also half-duplex.
G4SA: See Gigabit Ethernet 4-Port ServerNet adapter (G4SA).
Gigabit Ethernet 4-Port ServerNet adapter (G4SA). A multiport ServerNet adapter that 
provides 1000 megabits/second (Mbps) data transfer rates between HP Integrity 
NonStop™ NS-series systems and HP NonStop™ S-series systems and Ethernet 
LANs. The G4SA is the only LAN adapter supported for the I/O Adapter Module 
(IOAM) enclosure, and it is installed in slots 1, 2, 3, 4, and 5 of an IOAM. Although the 
G4SA supersedes the Ethernet 4 ServerNet adapter (E4SA), Fast Ethernet ServerNet 
adapter (FESA), and the Gigabit Ethernet ServerNet adapter (GESA), it cannot be 
installed in an HP NonStop S-series enclosure. 
HP Open System Management (OSM) Interface. See OSM.
half-duplex. Transmission permitted in only one direction at a time over a data 
communications line. See also full-duplex.
hardware. All the physical components of a computer system or a peripheral device.
interface converter cable. A cable that is connected to a wide area network (WAN) port on 
the SWAN 2 concentrator and supports one of the supported electrical interfaces 
(RS-232, RS-449, X.21, and V.35). One end of each interface converter cable has a 
50-pin connector that connects to any WAN port on a SWAN 2 concentrator. The other 
end of each cable is a connector that conforms in size and pinout to one of the 
supported interfaces. 
IOAM: See I/O Adapter Module (IOAM).
IOAM Enclosure: See I/O Adapter Module Enclosure (IOAM Enclosure).
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