3Com Switch 7700 Installation Manual page 15

Port transmission speed
Optional cables and maximum
transmission distance
Compliance
Each 100M Ethernet port has a green LED, indicating LINK/ACTIVE states. Off means the line is disconnected.
Green flashing means data is being transmitted or received. The 48T panel and LEDs are illustrated in Figure 5.
Figure 5 The 48T (3C16860) panel
3C 16860
The 48T module requires two Category-5 twisted pairs of 100 ohm cable with an RJ-45 connector plug for
transmission within 100 meters (300 feet).
8-port 1000BASEX (GBIC) GE Card (8GBIC) (3C16858)
The 8GBIC module provides 8 external Gigabit GBIC module ports. A GBIC module is used for each data
receiving/transmitting channel. The following modules are available:
The 8GBIC module is illustrated in Figure 6.
Figure 6 The 8-port 1000BASEX (GBIC) GE Card
Table 11 describes the attributes of the 8GE module.
Attribute
10M half/full duplex
100M half/full duplex
MDI/MDIX auto-sensing
The external cables are 4 Category-5 twisted pairs for transmission within 100m.
IEEE802.3
IEEE802.3u
IEEE802.3x
3CGBIC91
3CGBIC92
3CGBIC93
3CGBIC97
S W I T C H 7 7 0 0 C O M P O N E N T S
48TX
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