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About the T1 DSU/CSU
1-2
7112-A2-GB20-20
March 1998
H Management. Provides management via:
— ASCII terminal connection through the Terminal port
— External modem through the Terminal port
— Telnet through the Ethernet port or the FDL
— SNMP through Ethernet port or the FDL
H Alarm Indication. Activates front panel LEDs.
H Diagnostics. Provides the capability to diagnose device and network
problems and perform tests, including digital loopbacks, pattern tests, and
self-test.
H Device and Test Monitoring. Provides the capability of tracking and
evaluating the unit’s operation, including health and status, and error-rate
monitoring.
H Security. Provides multiple levels of security, which deters unauthorized
access to the DSU/CSU.
Typical DSU/CSU Configurations
Figures 1-1 and 1-2 show typical LAN/WAN interconnection applications for the
DSU/CSU. The routers connected to the DSU/CSU at each location provide the
LAN interconnection.
T1
98-15688-01
DSU/CSU DSU/CSU
Router Router
Figure 1-1. Typical Configuration (through a T1 network)
Two SNMP DSUs can be connected back-to-back to act as Local Area Data Sets.
98-15697-01
DSU/CSU
Router
DSU/CSU
Router
Figure 1-2. Typical Configuration (DSU/CSU to DSU/CSU)