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3.5 Operating Mode
Four TP ports are designed as auto-negotiation capable switched ports.
Each port can determine the speed and duplex type used automatically
through an auto-negotiation process with the remote connected auto-ne-
gotiation device. The auto-negotiation process is performed when the con-
nection is made. When connecting to a non-auto-negotiation device, each
TP port also features the capability to auto-sense the connection speed.
The following table lists the operation mode used for the switched port
when it connects to different devices. The operating mode includes the
connection speed and duplex type.
Connected Device Operation Mode Used
10BASE-T hub 10Mbps, half-duplex
100BASE-TX hub 100Mbps, half-duplex
Auto-negotiation device Auto-negotiation *2
Non-auto*1 half-duplex device auto-speed-sensing *3, half-duplex
Non-auto full-duplex device Not supported
*1 Non-auto : non-auto-negotiation
*2 determined through auto-negotiation process
*3 speed is determined by auto-sensing function
Most of 10BASE-T hubs and 100BASE-TX hubs are non-auto-negotia-
tion devices and operate on half-duplex mode.
The operating mode of the fiber port is determined by the setting of
duplex mode selector located on rear panel. The following table lists the
maximum MM fiber cable length connecting to different devices:
Connected Device Duplex Mode Distance(MM cable)
Network card Half-duplex 400 m
Network card Full-duplex 2 Km
Class I hub Half-duplex 160 m
2 Class II hubs Half-duplex 112 m
Switched fiber port Half-duplex 400 m
Switched fiber port Full-duplex 2 Km