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Maintenance
4-133360-A2-GB20-20 December 1996
Table 4-7
(2 of 2)
Troubleshooting
Symptom SolutionsPossible Cause
Message
AIS at DTE
appears
DTE is sending an AIS. Check the DTE.
Message EER at
Net appears
Facility problem. Contact your facility provider.
BPV LED is ON 1. Incompatible line coding format between the
DTE and the E1 NTU.
2. G.703 DTE cable problem.
1. Check that the line coding format for the
G.703 DTE interface is correct.
2. Check that the DTE cable is securely attached
at both ends.
A failure message
appears followed
by an 8-digit code
(
x
x
x
x
x
x
x
x
)
Internal E1 NTU problem. Record the 8-digit code, then contact your
field service representative.
SNMP link is
down
1. The SNMP manager configuration is
mismatched with the device configuration.
2. The SNMP manager’s link layer protocol is not
running.
1. Check that the configurations are matched.
2. Start the link layer protocol.
No SNMP
communication
via the AUX port
1. Cable problem.
2. The link layer protocol is not running.
1. Check that the cable is securely attached at
both ends.
2. Change the Aux Use configuration option to
None, and then back to SNMP or Daisy (as
appropriate).