Cisco 1601 - Router - EN Hardware Installation Manual page 111

DSL Interface Cards
Figure 74
customer. Other types of POTS splitters are installed by the telephone company on an exterior wall of
the customer premises.
Figure 74
Cisco router
Microfilters
Microfilters are installed on telephones to improve voice-call quality when voice and data equipment are
using the same telephone line (twisted pair). You should use microfilters only when the two following
conditions exist:
•
•
Figure 75
Figure 75
To phone
is an example of a type of POTS splitter that is installed at the customer premises by the
POTS Splitters
DAT A
To
To phone
The documentation for the telephone you are using with the router states that microfilters should be
used with the phone.
Poor telephone call quality can be resolved by installing a microfilter on the phone line.
shows one type of microfilter.
Microfilter
Using POTS Splitters and Microfilters with an ADSL-over-POTS WIC (WIC-1ADSL)
VO ICE
To wall jack
To wall jack
OL-12846-01
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