Draytek VigorAccess User's Installation Manual page 22

VigorAccess User Installation Guide
1.5.2 Centric Patch Panel Connection
The IP DSLAM can provide ADSL and voice services over the same telephone wiring.
It also has built in splitters internally that can save space and simplify installation.
If the application is using on building environment, the CPP (Centric Patch Panel) is
preferred. The purpose of CPP module is to transfer RJ-21 jack in IP DSLAM to RJ-
11 connector. The CPP front panels is shown in Figure 1-12. It is usually installed
between end-users' equipment and telephone company in a basement or telephone
room. The CPP is the point of termination for the outside telephone company lines
coming into a building and the telephone lines in the building.
RJ11
Figure 1-12. CPP front panels
The following figures give some examples of scenario for using IP DSLAM to
combine voice and data signals.
The existing telephone wiring usually depends on user's region. Here are descriptions
of two typical installation scenarios. Use telephone wires with RJ-11 jacks on one end
for connecting to the CPP board.
1.5.2.1 Installation CPP Scenario A
Users can connect a cable from RJ-21 (LINE) attached in IP DSLAM to the CPP
board. Then users can connect a RJ-11 jack port attached in a CPP to ADSL modem
directly. The Data only CPP connection is shown in Figure 1-13.
22