Westermo DDW-120 - Manual (Page 12)

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Getting started
The DDW-120 is easy to use and install, the units work in pairs, one as has to be config-
ured as CO (Central Office) and one as CPE (Customer Premises Equipment). This con-
figuration is made with DIP-switches situated under the lid of the DDW-120.

Connect the SHDSL Line
1) Connect the twisted pair to DSL screw terminal 1 and 2 (polarity independent)
situated at the base of the DDW-120.

Connect the Ethernet Line
Connect Ethernet to the TX port on the front of the DDW-120.
The factory settings for the DDW-120 is plug and play mode where TX port
is enabled for:
… Ethernet Auto-negotiation enabled.
… Auto MDI/MDI-X.
… Auto-polarity enabled.
The DDW-120 will automatically sense the data rate of the connected unit and cable
type.

Settings in the units
The units operate in pairs, one as CO (Central Office) and one as CPE
(Customer Premises Equipment). Factory setting in the DDW-120 is as CPE.
Depending on the quality of the line and the distance there is possibility to select auto-
baud function.
This is done via DIP switches in the unit configured as CO.
Factory default is autobaud, reliable mode.
Note! Before connection and installation one of the connecting units have to be
reconfigured as a CO, see DIP-switch S1:4.
Note!
If the DSL link is not established, the speed might be set to high for the distance.