3Com Switch 7700 Installation Manual

Also see for Switch 7700: Installation guide Datasheet Configuration guide Configuration guide Configuration guide

Contents

S W I T C H 7 7 0 0 C O M P O N E N T SFigure 8 The 8-port 10/100/1000BASE-T GE CardAttributes of the 8BT module are described in Table 14.Table 14 Attributes of the 8BT (3C16859) moduleAttribute 8BT I/O module (3C16859)CPU MPC850BootROM 512KbSDRAM 64MBDimensions (L x W) 366.7mm x 340mmMaximum power consumption 50WConnector type RJ-45Number of port(s) 8Port transmission speed10Mbps, half/full duplex100M bps, half/full duplex1000M bps, full duplexOptional cables and maximumtransmission distance4 Category-5 non-shielded twisted pairs serve as external cables. The resistancevalue of each pair is 100 ohm. The cable has a maximum transmission distance of100m.ComplianceIEEE 802.3abIEEE802.3IEEE802.3uIEEE802.3xEach port on the 8BT module has 2 LEDs, as shown in Figure 9.Figure 9 The 8-port 10/100/1000BASE-T GE module panel3C16859Table 15 describes the LEDs on the 8BT module.Table 15 The 8-port 10/100/1000BASE-T GE module LEDsIndicator State descriptionLINK Off — the link is not connectedGreen — the link is connectedACT Off — there is no data being transmittedThe LED blinks when data is being transmitted or receivedThe 8BT module requires four Category-5 unshielded twisted pairs of 100 ohm cable with RJ-45 connectors fortransmission within 100 meters (300 yards).24-port 100BASE-FX MMF FE Card (24FX)The 24FX module, shown in Figure 10, provides 24 100M multi-mode Ethernet optical port service channels.17