Troubleshooting
6-26 9124-A2-LB20-00
March 2000
DTE LoopbackThe DTE external Loopback (DTLB) test loops the received signal on a DTE
interface back to the DTE without affecting the operation of the remaining ports.
Use this test for isolating problems on the DTE interface.
An attached device or test equipment must generate data to be looped back.
98-16190
Network
Interface
DSX
Interface
DTE
Port 1
DTE
Port 2
All 1s
DTLB DTLB
This test may affect the operation of the frame relay PVCs assigned to
the selected port. Any IP data being sent while this test is active will be
disrupted.