2-1

3162-A2-GB20-30 March 1999
Installation 2
Overview
This chapter contains information for installing your DSU/CSU. It includes
application examples, cabling, and power-up information.

Application Examples

The DSU/CSU acts as an interface between the T1 digital network and the
customer’s equipment.
The DSU/CSU is connected to the customer’s equipment through one of the
synchronous data ports (PORTs 1–2) or the DTE Drop/Insert (DSX-1) interface. It
is connected to the T1 digital network through the network interface.
Some common applications for the DSU/CSU are:
Point-to-Point LAN interconnection (Figure 2-1).
Shared access to network-based services (Figure 2-2).
Fractional T1 network applications (Figure 2-3).
NETWORK
496-15218
DSU/CSU DSU/CSU
LAN
ROUTER
LAN
ROUTER
Figure 2-1. Point-to-Point Application Example