Paradyne 3160-A2-GB21-50 Troubleshooting Symptom Possible Cause Solutions, Yellow at Net

Maintenance

Troubleshooting	For problems other than those listed in the table, please
	contact your service representative.
The DSU/CSU is designed to provide you with
trouble-free service. However, Table 4-6gives you some
direction if a problem occurs.

Table 4-6

(1 of 2)

Troubleshooting

Symptom		Possible Cause		Solutions
No power	1.	The power module is not securely attached.	1.	Check the power module attachment.
	2.	The wall receptacle has no power.	2.	Check the wall receptacle power by plugging
				in some equipment that is known to be
				working.
Power-Up	The DSU/CSU has detected an internal hardware		Contact your service representative.
Self-Test fails	failure.
Message LOS at	1.	Network cable problem.	1.	Check that the network cable is securely
NET appears				attached at both ends.
	2.	No signal is being transmitted at the far-end.	2.	Check the far-end status.
	3.	Facility problem.	3.	Contact your facility provider.
Message LOS at	1.	DTE Drop/Insert (DSX-1) cable problem.	1.	Check that the DTE Drop/Insert (DSX-1) cable
DTE appears				is securely attached at both ends.
	2.	No signal being transmitted from the DTE.	2.	Check the DTE status.
Message OOF at	1.	Incompatible framing format between the	1.	Check that the framing format for the network
Net appears		network and the DSU/CSU.		interface is correct.
	2.	Network cabling problem.	2.	Check that the network cable is securely
				attached at both ends.
	3.	Facility problem.	3.	Contact your facility provider.
Message OOF at	1.	Incompatible framing format between the	1.	Check that the framing format for the DTE
DTE appears		Drop/Insert port on the customer premises		Drop/Insert (DSX-1) interface is correct.
		equipment and the DSU/CSU.
	2.	DTE Drop/Insert (DSX-1) cabling problem.	2.	Check that the DTE Drop/Insert (DSX-1) cable
				is securely attached at both ends.
Message	1.	Network cable problem.	1.	Check that your network cable is securely
Yellow at Net				attached at both ends.
appears	2.	Far-end device has lost framing sync on the	2.	Check the status of the far-end device.
		line.
	3.	Facility problem.	3.	Contact your facility provider.
Message	DTE has detected an LOS or LOF condition.		1.	Check the status of the DTE.
Yellow at DTE			2.	Check that the DTE Drop/Insert (DSX-1) cable
appears
				is securely attached at both ends.
Message	1.	Upstream device is transmitting an AIS.	1.	Check the status of the upstream device(s).
AIS at Net	2.	The network is transmitting an AIS.	2.	Contact your facility provider.
appears

3160-A2-GB21-50 January 1997 4-11