User guide

Telephony and Multimedia Services
1/1551-HSC 901 35/3 Uen C 2005-12-02
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Figure 49 Base band Solution with Integrated POTS/ISDN Filter
8.1.2 Baseband Solution with External Filter
The 10-line IP DSLAM EDN110 supports a variety of external mechanical
POTS low-pass filters and one combined ISDN splitter + low-pass filter
solution. Connected to the IP DSLAM, the POTS low-pass filter complies
with ETSI recommendations. In the network, the POTS filter is placed on
the network side of the IP DSLAM between the IP DSLAM and the
exchange, as shown in the figure below.
In Figure 50 on page 72 the EDA implementation of base band POTS is
illustrated with a filter inserted between the IP DSLAM and the local
exchange. This is only necessary when using the 10-line IP DSLAM.