Testing

Line Loopback

Line Loopback (LLB) loops the received signal on the network interface back to the network without change.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAP

 

CAP

 

T1

 

 

 

 

 

 

 

 

 

 

DSL

 

 

 

 

 

 

 

Port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transceiver

 

Framer

 

Framer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIU

AIS DSX-1 Port

98-16112

"Procedure

To run a Line Loopback:

1.Position the cursor at the Start command next to Line Loopback on the Network 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.

4.Press Enter.

Line Loopback cannot be started when a Repeater Loopback, DTE Loopback, Remote DCLB, network-initiated Line Loopback, or Telco-initiated tests are in progress.

7984-A2-GB20-10

February 1999

5-3

Page 59
Image 59
Paradyne HOTWIREt 7984 manual Line Loopback