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A-6 Reference Guide
Internal termination switch
Non-North American
models only
The Netopia Router includes an internal termination switch for
terminating the S/T bus. The S/T bus is the connection from the
Router to the NT1 or wall jack on your ISDN line. The S/T bus must
be properly terminated to avoid ISDN communications errors.
The Netopia Router ships with its internal termination switch set to
the off position. This means that you should already have S/T bus
termination. If you are unsure of whether you have S/T bus
termination, contact your ISDN service provider.
If you do not have S/T bus termination, you should set the internal
termination switch to the on position.
The switch is located just inside a rear-panel ventilation hole that is
visibly larger than the other holes, as shown in the following
illustration:
The Netopia Router’s opening for accessing the internal termination switch.
Use a pointed object, such as a pen, to carefully reach inside the
correct ventilation hole and slide the switch to the left. This is the
on position, with termination in effect.
Switch Switch
in on
position
in off
position
Large vent hole