Nortel Passport 4460, Hardware Reference Manual

Page: 45 / 152

Chapter 2 WAN Adapter Modules 45
Reference for Passport 4460 Hardware
The chart below defines the functions of the indicator lights for the T1/FT1 DSU/
CSU Adapter Module.
For additional information, see the following:
• Chapter 6, “Cables ”
• Appendix A, “Indicators ”
• Appendix B, “Regulatory Compliance and Telephone Company
Requirements
”
After the modules are in place and the system is operating, refer to the software
documentation for configuration information (see
“Product documentation” on
page 17 ).
E1/FE1 G.703/G.704 Adapter Modules (RJ and BNC)
Two E1/FE1 G.703/G.704 Adapter Modules are available, depending on the
connector type you are using:
• E1/FE1 G.703/G.704 (RJ) Adapter Module with DSU functionality at 120
ohms, with an RJ-48 physical connector
• E1/FE1 G.703/G.704 (BNC) Adapter Module with DSU functionality at
75 ohms, with an external balun to provide BNC connectivity
Indicator Color Definition
Red Alarm Red Lights when the T1 port is in a red alarm state
Yellow Alarm Amber Lights when the DSU/CSU has received a yellow alarm
from the T1 network
Loop Amber Lights when the T1 interface is placed in loopback
mode
Sync Green Lights when the T1 port is synchronized with the T1
network