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Chapter 4 Introduction of DIP-Switch
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1. Setting of DIP-Switch
There is a set of 8 bit DIP-Switch on PCB card. If you want to manage by software,
the DIP-Switch must be default setting.
Definition
OFF (default setting)
ON
1 bit: remote
loop-back
Disable
Enable
2 bit: local
loop-back
Disable
Enable
3bit: Bit error ratio
threshold
Don’t shut down
Auto shut down when error
bit is more than 10
-6.
4bit: choice of
compatibility
5bit: reserved
6bit: configuration
of Eth
7bit: configuration
of Eth
Shown as table and figure below
8bit: fault pass
Disable
Enable
Remote loopback:
If any of E1 is linking with remote equipment (the indicator is green ),
network administrator can run the remote loop-back testing function (turn on the
switch no.1), enabling network operators to diagnose the E1 links though a Bit Error
Tester at a central location without sending a technician to the remote site. Ethernet
packets of both Local and remote site are isolated, can’t be forward to E1 interface.
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