1000BaseX

￿Two different wavelengths supported

￿Full duplex only

￿1000Base-SX: short wave, 850 nm MMF

￿1000Base-LX: long wave, 1300 nm MMF or SMF

￿1000Base-CX:

￿Twinax Cable (high quality 150 Ohm balanced shielded copper cable)

￿About 25 m distance limit, DB-9 or the newer HSSDC connector

(C) Herbert Haas 2005/03/11

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Gigabit Ethernet can be transmitted over various types of fiber. Currently (at least) two types are specified, short and long wave transmissions, using 850 nm and 1300 nm respectively. The long wave can be used with both single mode (SMF) and multimode fibers (MMF). Only SMF can be used for WAN transmissions because of the much lower dispersion effects.

Note that there are several other implementations offered by different vendors, such as using very long wavelengths at 1550 nm together with DWDM configurations.

The twinax cable is basically a shielded twisted pair cable.

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