User guide

2-7
Cisco 678 ADSL Router Installation and Operation Guide
78-10172-01
Chapter 2 Installation Procedures
Setting Up the Cisco 678 Hardware Environment
Figure 2-4 Cisco 678 Connected through an External POTS Splitter
EZ-DSL™ (Splitterless) Configuration
In the EZ-DSL configuration, your telephone equipment is not connected to a
POTS splitter. Without a POTS splitter and under certain circumstances, transient
noise from a telephone can interfere with the router’s operation, and the router can
cause noise on the telephone line. To prevent this from happening, small
microfilters must be connected to the telephone lines. If you implement an
EZ-DSL configuration, your installation landscape should look similar to
Figure 2-5.
Telephone
NID
Telephone
NID
31521
Data
Ethernet
Cisco 678
Voice
Hub