Cisco 1601 Hardware Installation Guide - Page 113

DSL Interface Cards Using POTS Splitters and Microfilters with an ADSL-over-POTS WIC (WIC-1ADSL) Figure 77 To telco Customer-Installed Splitter Actual wall of building Splitter Required microfilter Cisco router Optional microfilters Optional telephones, if supported by your telco 39275 Router and Telephone Using Separate Telephone Lines This scenario is described below and illustrated in Figure 78. • 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. Figure 78 No Splitter, Optional Microfilter Line 1 to telco (ADSL or G.SHDSL) Line 2 to telco (POTS) Actual wall of building Cisco router Optional microfilter 39197 OL-12846-01 17