3Com Switch 7700 Installation Manual page 17

Figure 8 The 8-port 10/100/1000BASE-T GE Card
Attributes of the 8BT module are described in Table 14.
Table 14 Attributes of the 8BT (3C16859) module
CPU
BootROM
SDRAM
Dimensions (L x W)
Maximum power consumption
Connector type
Number of port(s)
Port transmission speed
Optional cables and maximum
transmission distance
Compliance
Each port on the 8BT module has 2 LEDs, as shown in Figure 9.
Figure 9 The 8-port 10/100/1000BASE-T GE module panel
3C 16859
Table 15 describes the LEDs on the 8BT module.
Table 15 The 8-port 10/100/1000BASE-T GE module LEDs
LINK
ACT
The 8BT module requires four Category-5 unshielded twisted pairs of 100 ohm cable with RJ-45 connectors for
transmission 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.
Attribute
MPC850
512Kb
64MB
366.7mm x 340mm
50W
RJ-45
8
10Mbps, half/full duplex
100M bps, half/full duplex
1000M bps, full duplex
4 Category-5 non-shielded twisted pairs serve as external cables. The resistance
value of each pair is 100 ohm. The cable has a maximum transmission distance of
100m.
IEEE 802.3ab
IEEE802.3
IEEE802.3u
IEEE802.3x
Indicator
Off — the link is not connected
Green — the link is connected
Off — there is no data being transmitted
The LED blinks when data is being transmitted or received
S W I T C H 7 7 0 0 C O M P O N E N T S
8BT I/O module (3C16859)
State description
17