Paradyne 8747, 8777, 8779, Hotwire M/SDSL and HDSL2 Termination Units manual Network Line Loopback

Testing

Network Line Loopback

Network Line Loopback (LLB) loops the received signal on the network interface back to the network without change. Also, for DSX-1 models:

HIf the DSL port is in a DS0 cross-connection, corresponding DSX-1 time slots are sent all ones.

HIf the DSL port is in Bypass mode or a DS1 cross-connection, an AIS is sent to the corresponding DSX-1 port.

	CAP	CAP	T1/E1
DSL
Port
	Transceiver	Framer	Framer

LIU

AIS DSX-1 or G.703

Port

99-16612

"Procedure

To run a Line Loopback:

1.Position the cursor at the Start command next to Network Line Loopback on the Network & DSX-1 or Network & G.703 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.

Network Line Loopback cannot be started when another loopback or pattern test is in progress.

8-4 April 2000 8700-A2-GB20-00