Data Terminal Loopback - Paradyne 7974 User Manual

8. Testing

Data Terminal Loopback

A Data Terminal Loopback (DTLB) loops user data back to the DTE. This loopback
is located as closely as possible to the user data port (DTE) interface.
Procedure
To run a Data Terminal Loopback:
The Data Terminal Loopback cannot be started when a Repeater Loopback, Line
Loopback, DCLB, or Remote DCLB is in progress on the data port.
8-10
DSL
Framer
All Ones CAP
Port
1. Position the cursor at the Start command next to Data Terminal Loopback on
the SYNC Data Port Tests screen.
2. Press Enter.
The Start command is changed to Stop.
3. To manually stop the test, verify that the cursor is positioned at the Stop
command and press Enter.
December 2001
NTU/LTU
Port
EIA-530
Interface
Port
98-15933-01
7900-A2-GB21-20