Serial Port
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Model 3086 G.SHDSL Integrated Access Device User Guide
4 • Basic Application Configurations
2. Locate the small daughter board on the 3086 board between the DSL port (RJ-45) connector and the
serial port connector (Figure 7 shows location of DTE/DCE daughter board).
Figure 7. Location of DCE/DTE board
3. The DTE/DCE daughter board is installed at the factory with the DCE label and arrows pointing towards
the X.21 connector (DCE configuration). To change to DTE configuration, lift the daughter board from
the connector, turn it around so that the DTE label an arrows point to the X.21 connector, and place it
back on the connector. The X.21 port is now configured as a DTE.
Note
When the X.21 port is configured as a DTE, the clocking mode for
the port must be set for external clock.
Configuring the Serial port features
Switch configuration: Switch configuration in the 3086 is to be used in situations where the 3086 functions as
a DSL NTU only, or in situations where the user needs to change the bandwidth allocated to the serial port
without resorting to the use of a PC for configuration.
