RC907/908-EV35 User Guide
Chapter 4. Dip-switch Setup
The configuration dip-switch is on the front panel of RC907-EV35. (It is on the
back panel of RC908-EV35.) The definitions of the dip-switch are as follows.
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The 1st bit: Duplex mode setup
This bit is used to configure the duplex mode when the auto-negotiation at Ethernet
interface fails.
ON: Full duplex mode when auto-negotiation fails
OFF: Half duplex mode when auto-negotiation fails (default)
According to the port of user devices, this bit should be configured as follows.
Port of User Devices
The 1st Bit Setup
Actual Working Mode
10/100Mbps auto-negotiation Any
10Mbps full duplex mode
Forced 10Mbps half duplex
OFF
10Mbps half duplex mode
Forced 10Mbps full duplex
ON
10Mbps full duplex mode
10Mbps full/half duplex
auto-negotiation
Any
10Mbps full duplex mode
Since the Ethernet interface of RC907/908-EV35 works at 10Mbps full/half duplex
mode auto-negotiation, it cannot be connected with the forced 100Mbps interface
of other equipment.
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The 2nd bit: Fault-Pass-Through function setup
On: Fault-Pass-Through function enabled. In this case, the DSR alarm of V.35
interface can lead to complete failure of the Ethernet port, and the link fault will be
reported to the Switch. When the DSR alarm of V.35 interface disappears, the
Ethernet port will automatically recover.
Off: Fault-Pass-Through function disabled (factory default). In this case, the
DSR alarm will not have effect on the Ethernet port.
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The 3rd ~5th bit: Buffer size setup
Since the bit rate of V.35 interface is dependent on the rate of connected DCE
equipment, it varies in large range. It is necessary to adjust the size of buffer. It can