11
Note
In some areas, installing a surge suppression
device may also help to protect your VC-231GP
from being damaged by unregulated surge or
current to the VC-231GP or the power adapter.
¾
DIP Switch
The VC-231GP provides 4 selective transmission modes. By
switching the transmission modes, you can obtain a best
transmission mode to suit with phone line quality or distance of
connectivity. The following is the summary table of transmission
setting, bandwidth and distance extensibility tested for AWG 24
(0.5mm) twisted-pair without noise and cross talk.
DIP-1
DIP-2
DIP-3
DIP-4
Mode Transmission Band Profile SNR Margin
OFF
CO
G.INP
Asymmetric
12dB
ON (default)
CPE
Interleave
Symmetric
8dB
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DIP-1: Mode (CO / CPE)
CO (Central Office)
The Master device mode, usually the
CO device, is located at the data center
of ISP or enterprise to link to the
backbone.
CPE (Customer
Premises Equipment)
The Slave device mode, usually the CPE
device, is located at branch office, home
or remote side as the long reach data
receiver. The CPE can be connected to
the PC, IP camera or wireless access
point or other network devices.