Chapter 2: Card Installation
Selecting NT or TE Mode
There is a 5-position jumper on the board for each port to select between
NT and TE mode. This must be set before installing the card. Each of the
four ports can be set for TE or NT mode independently. This eliminates
the need to use a crossover cable. Place the jumper on the left side of the
connector for NT mode, or place it on the right side for TE mode as
shown in Figure 3. The default setting is TE mode. Notice in Figure 5 on
page 20 there is an additional set of jumpers which is reserved for future
use. These jumpers are not to be used at this time.
There is a risk of electrical shock due to lightning when this
device is utilized in TE mode. Take safety precautions when
using the card in this manner.
Note:
Be careful when changing the jumper position.
Figure 3: NT and TE Mode Jumper Positions
Digium, Inc.
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