Cisco ONS 15454 DWDM Manual

1-11
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.2.2 Perform a Terminal Loopback on a Source-Node MXP or TXP Port
Figure 1-4 Terminal Loopback on a Source-Node MXP or TXP Port
Caution Performing a loopback on an in-service circuit is service-affecting.
Note Terminal loopbacks require on-site personnel.
Complete the “Create the Terminal Loopback on a Source-Node MXP or TXP Port” procedure on
page 1-11.
Create the Terminal Loopback on a Source-Node MXP or TXP Port
Step 1 Connect an optical test set to the port you are testing:
Note For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
a. If you just completed the “1.2.1 Perform a Facility Loopback on a Source-Node MXP or TXP Port”
procedure on page 1-7, leave the optical test set hooked up to the MXP or TXP port in the source
node.
TXP
Te st Set
Client port
Tr unk port
TXP
Client port
Tr unk port
Te st Set
Destination
ONS Node
TXPTXP
Source
ONS Node
Source
ONS Node
Intermediate
ONS Node
TXPTXP
Destination
ONS Node
TXPTXP
Intermediate
ONS Node
TXPTXP
145760
Regenerate
Regenerate

Cisco ONS 15454 DWDM Specifications

General

Chassis Type	DWDM
Form Factor	Rack-mountable
Slots	17
Storage Temperature	-40 to 158°F (-40 to 70°C)
Relative Humidity	5% to 95% non-condensing
Power Supply	AC or DC
Cooling	Internal fans
Operating Temperature	23 to 104°F (-5 to 40°C)
Altitude	0 to 6500 ft (0 to 1981 m)
Safety Compliance	EN 60950-1
EMI Compliance	FCC Part 15