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1000BaseZX

1000BaseZX (or 1000Base-ZX) is a Cisco specified standard for gigabit Ehternet communication. 1000BaseZX operates on ordinary single-mode fiber-optic link spans of up to 43.5 miles (70 km). Link spans of up to 62.1 miles (100 km) are possible using premium single-mode fiber or dispersion-shifted single-mode fiber. 1000BaseZX uses long wavelength laser (1550 nm). The 1000BASEZX GBIC is intended to be used as a Physical Medium Dependent (PMD) component for Gigabit Ethernet interfaces found on various switch and router products. It operates at a signaling rate of 1250 Mbaud, transmitting and receiving 8B/10B encoded data.

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1000BaseZX