WS G5483 1000BASE-T Copper GBIC transceivers are based on the GBIC Multi Source Agreement (MSA). They are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE STD 802.32. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features. The WS G5483 1000BASE-T Copper GBIC transceivers uses the GBIC’s RX_LOS pin for link indication and 1000BASE-X auto-negotiation should be disabled on the host system. The WS G5483 1000BASE-T Copper GBIC transceivers is compatible with 1000BASE-X auto-negotiation, but does not have a link indication feature(RX_LOS is internally grounded). We supply the WS G5483 Cisco equivalent transceivers.

WS G5483 1000BASE-T Copper GBIC transceiver Features:
Hot-pluggable GBIC footprint              
Extended case temperature range (0°C to +70°C )
Fully metallic enclosure for low EMI
Low power dissipation (1.05 W typical)
Compact RJ-45 connector assembly
Access to physical layer IC via 2-wire serial bus
    
WS G5483 1000BASE-T Copper GBIC transceiver Applications:
1.25 Gigabit Ethernet over Cat 5 cable