15
Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers
OL-3317-03
Using POTS Splitters and Microfilters
Telephone Company-Installed Splitter
This scenario is described below and illustrated in Figure 9.
• The telephone company has provisioned a single copper pair to be used by both the telephone
(POTS) service and the router with an ADSL card, so a POTS splitter must be installed.
• The splitter is installed by the telephone company on the customer premises. This type of splitter is
also referred to as a network interface device (NID).
• The router and telephone are on separate lines (twisted pair) to the splitter.
• The router and telephone share the same telephone line (twisted pair) to the telephone company.
Figure 9 Telephone Company-Installed Splitter
Customer-Installed Splitter
This scenario is described below and illustrated in Figure 10.
• The telephone company has provisioned a single copper pair to be used by both the telephone
(POTS) service and the router with an ADSL card, so a POTS splitter must be installed.
• The splitter is installed by customer on the customer premises.
• Router and telephone are directly connected to the splitter, which is connected to the telephone line.
• Router and telephone share the same telephone line (twisted pair) to the telephone company.
• For optional telephones connected through the splitter, microfilters are optional. They should be
installed only if they improve telephone call quality.
• For telephones connected directly to the telephone line, microfilters are required.
Splitter (NID)
To telco
Cisco router
Optional
microfilters
39196
Actual wall of building
To Next Page
Loading...
Need help?
General
