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User Manual
10
Chapter 4
Device Settings
4.1 DIP switch description
4.1.1 The location of the DIP switches
The DIP switches are placed on the front panel of RC831-120 and RC831-120-BL (see Figure 3-7
and Figure 3-8). We take the DIP switches of RC831-120 as an example.
4.1.2 DIP switch description
The DIP switches on the device front panel are for the control of the optical interface and the E1
interfaces. For detailed description of these DIP switches, please refer to the following four tables
(Table 4-1, Table 4-2, Table 4-3 and Table 4-4).
Table 4-1 The MASK button on the front panel of the RC831-120
Serial
Number
Title Number
of Bits
Description
20
MASK
1 bit
Mask the traps from E1 lines that are not
used at the local site.
Press out the bit, the traps will not be
masked.
Press in the bit, the traps will be masked.
Table 4-2 The ADDR DIP switch on the front panel of RC831-120
Serial
Number
Title Numbers
of Bits
Description
Bit
4
Bit
3
Bit
2
Bit
1
Device
Type
OFF OFF OFF OFF Remote
Device
OFF OFF OFF ON Local
Device
No.1
OFF OFF ON OFF Local
Device
No. 2
21
ADDR 4
bits
OFF OFF ON ON Local
Device
