PLANET ADN-4100 - Manual (Page 16)

Figure 3 Connection diagram (without a telephone set before the splitter)
Connection 2: Figure 4 shows the connection of the device, PC, splitter, and
telephone set, when a telephone set is placed before the splitter.
As illustrated in the following figure, the splitter is installed close to the device:
Figure 4 Connection diagram (with a telephone set before the splitter)
Note:
When connection 2 is used, the filter must be installed close to the telephone
cable. See Figure 4. Do not use a splitter to replace the filter.
Installing a telephone directly before the splitter may lead to failure of connection
between the device and the central office, failure of Internet access, or slow
connection speed. If you need to add a telephone set before the splitter, you must
add a microfilter before the telephone set. Do not connect several telephones
before the splitter or connect several telephones with the microfilter.
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