Cisco ONS 15454 SDH Specifications Page 195

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
G1000-4 Card
3.28 G1000-4 Card
The G1000-4 card provides four ports of IEEE-compliant, 1000 MBits/s (Mbps) interfaces. Each
interface supports full-duplex operation for a maximum bandwidth of 1 GBits/s (Gbps), 2 GBits/s (Gbps)
bidirectional, per port and 2.5 GBits/s (Gbps), 5 GBits/s (Gbps) bidirectional, per card. Each port
auto-negotiates for full duplex and 802.3x flow control. The G1000-4 card uses GBIC modular
receptacles for the optical interfaces.
Cisco offers three GBIC modules as separate orderable products for maximum flexibility:
An IEEE 1000Base-SX compliant, 850 nm optical module;
An IEEE 1000Base-LX-compliant, 1300 nm optical module;
An IEEE 1000Base-ZX-compliant, 1550 nm optical module.
The 850 nm SX optics are designed for multimode fiber and distances of up to 220 meters on 62.5 micron
fiber and up to 550 meters on 50 micron fiber. The 1300 nm LX optics are designed for single-mode fiber
and distances of up to ten kilometers. The 1550 nm ZX optics are designed for single-mode fiber and
distances of up to eighty kilometers. Figure 3-47 shows the card faceplate and the block diagram of the
card.
Warning
Class 1 laser product.
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