Cisco 1700 Series Installationsanleitung PDF herunterladen (Seite 14)

Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers

OL-3317-03

Using POTS Splitters and Microfilters

Figure 7 is an example of a type of POTS splitter that is installed at the customer premises by the

customer. Other types of POTS splitters are installed by the telephone company on an exterior wall of

the customer premises.

Figure 7 POTS Splitters

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 with the Cisco 1700 series

routers only when the two following conditions exist:

• The documentation for the telephone(s) 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.

Figure 8 shows one type of microfilter.

Figure 8 Microﬁlter

Common Splitter and Microfilter Configurations

This section describes the most common scenarios for using splitters and microfilters with the

Cisco 1700 series routers. The scenarios are listed from most common to least common.

Cisco router

To wall jack

41199

To phone

DATA

VOICE

To wall jack

To phone

41201

WALL

PHONE

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Cisco 1700 Series Installationsanleitung Seite 14