CPF105C Datasheet, PDF (6/10 Pages) List of Unclassifed Manufacturers – Asymmetric Digital Subscriber Line

4.3. DC characteristic :
Product Specification
CPF105C
All requirement of this specification can be met in the presence of all POTS loop currents
from 0mA to 100mA. This in line filter can pass POTS tip-to-ring dc voltages of 0V to 105V
and ringing signals of 40V to 150Vrms at any frequency from15.3Hz to 68Hz with a dc
component in the range from 0V to 105V.
The DC resistance from tip-to-ring at the line port interface with the phone interface shorted,
shall be less than or equal to 25 ohms . The DC resistance from tip-to-ground and from
ring-to-ground at the POTS interface with the U-R interface open shall be greater than or
equal to5 Megohms . The ground point shall be local building or green wire ground. As an
objective , the dc resistance should exceed 10MΩ.
4.4. ZHP-r Definition :
ZHP-r is defined to be the impedance presented to the POTS connection by an ATU-R .The
equivalent circuit of ZHP-r is showing Figure.1. The ZH is valid only for voice band
frequencies. The combination of capacitors in the ZH-r is only representative .
0.10µF
100Ohm
0.47mH
0.10µF
Figure 1.
Data sheet subject to change without notice
RDPS-POTS328(R2)08/12/2002
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