User guide

6-2 DL3800 DS1 Inverse Multiplexer User Guide—February 1999
6
Figure 6-1 TESTS MENU
DTE/Network Loopback Test
Use the DTE/NETWORK Loopback test to verify the data port and
associated cabling. This bi-directional loopback loops the received data
port signal back to the data port and the received T1 processor signal back
to the T1 network. It can test a problem whose source is the T1 line.
LOCAL Loopback Test
Use the LOCAL Loopback test to verify the operation of the DL3800 data
port and its connections.
To receive valid test data at the DTE device, run LOCAL Loopback on all
active T1 ports.
NOTE: The following 3 tests interrupt payload traffic to the unit.