3-12 61200290L1-1G
Section 3, Configuration MX2800 M13 Multiplexer User Manual
Figure 3-8. T1/E1 Line Length Menu
T1/E1 Loopback Detection
The T1/E1 Loopback Detection option is used to set how the T1/E1 lines respond to loopback requests
coming from the network. See Figure 3-9 on page 3-13.