Cisco 1601 - Router - EN Hardware Installation Manual page 113

DSL Interface Cards
Figure 77
To telco
Cisco router
Router and Telephone Using Separate Telephone Lines
This scenario is described below and illustrated in
•
•
Figure 78
Line 1
to telco (ADSL
or G.SHDSL)
Customer-Installed Splitter
Actual wall of building
Splitter
Optional
microfilters
The telephone company has provisioned a single copper pair to be used exclusively by the router
with a DSL interface card and a separate copper pair to be used exclusively by the telephone (POTS)
service; therefore, neither a POTS splitter nor a microfilter is needed.
The microfilter is optional; it should be installed only if it improves telephone call quality.
No Splitter, Optional Microfilter
Line 2
to telco (POTS)
Cisco router
Using POTS Splitters and Microfilters with an ADSL-over-POTS WIC (WIC-1ADSL)
Required microfilter
Optional telephones,
if supported by your telco
Figure 78.
Actual wall of building
Optional microfilter
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