Paradyne 9820-2M - Manual (Page 174)

Troubleshooting
8-20 9820-A2-GB20-20 June 2000
Physical Tests
Physical Tests can be commanded for the user data port.
CAUTION:
You should not run these tests with frame relay equipment attached;
you must disconnect the frame relay equipment and use external test
equipment.
DTE Loopback
The DTE external Loopback (DTLB) test loops the received signal on a user data
port back to the DTE. Use this test for isolating problems on the user data port.
An attached device or test equipment must generate data to be looped back.
99-16284
Network
Port
User
Data
Port
DTLB
CAUTION:
DTE Loopback will affect the operation of the frame relay PVCs
assigned to the user data port. Any IP data being sent while this test
is active will be disrupted.
To start and stop a DTE Loopback, follow this menu selection sequence:
Main Menu
→
Test
→
Data Port Physical Tests
View the length of time that the test has been running in the Result column.