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Using Loopbacks
179
Figure 152
OC3/STM-1 Loopback Menu
4
Select
[1] Set Loopback
. A prompt listing the loopback choices for the selected
port appears at the bottom of the screen.
5
Enter the number corresponding to the type of loopback you want to configure.
The following subsections describe the available loopbacks for each of the
PathBuilder S330 interfaces.
T1/E1 UNI with IMA
Loopbacks
The following loopbacks are available for the T1/E1 UNI with IMA interface:
Network Line
— Loops the T1/E1 received data back on the output side after the
digital data has been recovered.
Local Card
— Loops the transmit T1/E1 output on the receive side; the
transmitted data will continue to go on the output.
Network Card
— Loops the T1/E1 received payload back toward the line output.