Paradyne T1 T1 Access Mux 926x - Manual (Page 211)

Troubleshooting
9-29 9161-A2-GH30-30 April 1998
DTE Payload Loopback (DTPLB)
The DTE Payload Loopback (DTPLB) loops the information received on the
Network or DSX-1 interface back to the network after it has passed through the
port circuitry. Use DTPLB for isolating problems on the DTE line. An attached
device or test equipment must generate and monitor data to be looped back.
496-15211
Network
Interface
DSX
Port
All 1s
DTLB DTLB
DCE
Port1
DCE
Port 2
CAUTION:
The Abort All Test selection from the Tests screen or the system test
timeout (set via the Test Timeout configuration option on the System
Options branch of the menu tree) will not interrupt a DTE Loopback test
that has been initiated by an attached device since the Local Loopback
lead will still be asserted.
The following tests cannot be running when a DTPLB test is initiated:
H DTE Loopback, Data Channel Loopback, or Send Pattern Test on the same
port