| Network cabling is always subject to a distance limitation, depending on the medium used and the bandwidth supported. Table B-1 provides a quick reference by listing the maximum cabling distance for a variety of network media and cable types. Table B-1. Cabling Distances for Network Media and Cabling | Medium | Cable Type | Maximum Distance | | 10/100BaseTX Ethernet | EIA/TIA Category 5 UTP | 100 m (328 ft) | | 100BaseFX | Multimode Fiber (MMF) 62.5/125 | 400 m half duplex 2000 m full duplex | | Single-Mode Fiber (SMF) | 10 km | | 1000BaseCX | STP | 25 m (82 ft) | | 1000BaseT | EIA/TIA Category 5 UTP (4 pair) | 100 m (328 ft) | | 1000BaseSX | MMF 62.5 micron, 160 MHz/km | 220 m (722 ft) | | MMF 62.5 micron, 200 MHz/km | 275 m (902 ft) | | MMF 50.0 micron, 400 MHz/km | 500 m (1640 ft) | | MMF 50.0 micron, 500 MHz/km | 550 m (1804 ft) | | 1000BaseLX/LH | MMF 62.5 micron, 500 MHz/km | 550 m (1804 ft) | | MMF 50.0 micron, 400 MHz/km | 550 m (1804 ft) | | MMF 50.0 micron, 500 MHz/km | 550 m (1804 ft) | | SMF 9/10 | 10 km (32810 ft) | | 1000BaseZX | SMF | 70 to 100 km | | SONET | MMF (62.5 or 50.0 micron) | 3 km (1.5 mi) | | SMI (Single-Mode Intermediate Reach) | 15 km (9 mi) | | SML (Single-Mode Long Reach) | 45 km (28 mi) | | FDDI | MMF | 2 km (1.2 mi) | | SMF | 15 km (9.3 mi) | | Token Ring (IEEE 802.5) | STP (Shielded Twisted-Pair) | 500 m (1640 ft) | | Token Ring (IEEE 802.5) | EIA/TIA Category 5 UTP | 100 m (328 ft) | | ISDN BRI | UTP, RJ-45 | 10 m (32.8 ft) | | Async EIA/TIA-232 | 2400 baud | 60 m (200 ft) | | 4800 baud | 30 m (100 ft) | | 9600 baud | 15 m (50 ft) | | 19200 baud | 15 m (50 ft) | | 38400 baud | 15 m (50 ft) | | 57600 baud | 7.6 m (25 ft) | | 115200 baud | 3.7 m (12 ft) | | Sync EIA/TIA-449 with balanced drivers, including X.21 and V.35 | 2400 baud | 1250 m (4100 ft) | | 4800 baud | 625 m (2050 ft) | | 9600 baud | 312 m (1025 ft) | | 19200 baud | 156 m (513 ft) | | 38400 baud | 78 m (256 ft) | | 56000 baud | 31 m (102 ft) | | T1 (1.544 Mbps) | 15 m (50 ft) | | When using 1000BaseLX/LH GBICs with 62.5 micron MMF, a mode-conditioning patch cord must be used for distances greater than 300 m (984 ft). | In many cases, you might find that you need to know the pinout connections for various network cables. The RJ-45 connector is commonly used across many media, but with different pinouts for each. Table B-2 shows the pinout for an RJ-45 connector when used with specific media. Table B-2. RJ-45 Connector Pinouts Based on Media Type | RJ-45 Pin | Router Console (DTE) | Ethernet UTP | Token Ring UTP | ISDN BRI S/TTE | ISDN BRI U | CT1/PRI CSU | CE1/PRI | 56/64k DSU/CSU (RJ-48S) | T1/E1 (RJ-48) | | 1 | RTS | TX+ | GND | | | Rcv Ring | TX Tip | TX Ring | RX (input) | | 2 | DTR | TX- | GND | | | Rcv Tip | TX Ring | TX Tip | RX (input) | | 3 | TxD | RX+ | TX+ | TX+ | | | TX Shld | | | | 4 | GND | | RX+ | RX+ | Tip or Ring | Ring | RX Tip | | TX (output) | | 5 | GND | | RX- | RX- | Tip or Ring | Tip | RX Ring | | TX (output) | | 6 | RxD | RX- | TX- | TX- | | | RX Shld | | | | 7 | DSR | | GND | | | | | RX Tip | | | 8 | CTS | | N/A | | | | | RX Ring | | |