Paradyne 7112 - Manual (Page 62)

Testing
7-4 7112-A2-GB20-20 March 1998
Line Loopback
Line Loopback (LLB) loops the received signal on the network interface back to
the network without change.
"
Procedure
To run a Line loopback:
1. Position the cursor at the Start command next to Line Loopback on the
Network Tests screen and press Enter.
2. The Start command is changed to Stop. If you want to manually stop the test,
verify that the cursor is positioned at the Stop command and press Enter.
496-15075
CSU DSU
Network
Interface
ALL 1s
LLB
DTE
Line Loopback cannot be started when any of the following tests are already
active:
H
Payload Loopback
H Data Channel Loopback
H
Send Pattern test on the network interface.
Payload Loopback
Payload Loopback (PLB) loops the received signal on the network interface back
to the network. Framing CRCs and BPVs are corrected.
"
Procedure
To run a Payload loopback:
1. Position the cursor on the Start command next to Payload Loopback on the
Network Tests screen and press Enter.
The Start command is changed to Stop.