Section 5, User Interface Guide - UIG-530, M13 Loopbacks61186003L1-1D 5-91DS2 LOOPBACKSPerforming a loopback test for the DS2 network requires selecting an option from 30 to 36from the Loopbacks menu screen. Figure 5-58 shows an example for the DS2 #1 Loopbacksmenu. Select option 1, D ATA M ODE, for the appropriate DS2 to end a test in progress.Figure 5-58. DS2 Loopbacks Menu (DS2 #1) ExampleDS2 NetworkA DS2 Network loopback test loops the selected DS2 signal back to the DS3 network prior tobeing passed through the M12/G.747 demultiplexer. All T1/E1 lines attached to the DS2network receive data normally, but all data inserted into the T1/E1 lines attached to theselected DS2 signal are ignored and replaced by the incoming DS2 network data. Figure 5-59provides an illustration for this test.Figure 5-59. DS2 Network Loopback TestShelf: 1 Slot: 4A ADTRAN MX2820 System 04/13/04 16:49Unacknowledged Alarms: None TID: HTVLALEXD16DS2 LoopbacksDS2 #1: Data Mode1 - Data Mode2 - Network LoopbackSelection: '?' - System Help Screen
