DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-933ISDN-PLK (ISDN-PRI Signaling Link Port)
9
If the UDS1 is not reporting errors, execute the long test sequence for the
D-channel. Investigate any errors. If there are none, execute a long test
sequence for the UDS1 circuit pack (UDS1-BD). Investigate any errors.
If no errors could be found by testing, the Link Error is probably not
affecting service. However, if this Link Error continues to be logged, follow
normal escalation procedures.
d. UDS1 Interface circuit pack is out-of-service. Look for and resolve
UDS1-BD errors in the Hardware Error Log.
e. Transmit FIFO Overflow error. This error indicates that the circuit pack is
having problems transmitting data to the Packet Bus, thus affecting the
conveyance of signaling information over the D-channel. Specifically, this
error occurs when the Packet Bus transmit buffers overflow. This condition
probably indicates a hardware problem.
The actual alarming level will depend on the options chosen via the
set
options
command on the G3-MT terminal. ISDN-PRI Signaling Link Port
alarms are treated as Station alarms, and their default alarming option is to
downgrade all alarms to Warning. The value shown in the preceding table
indicates the normal, unfiltered case (option ‘‘y’’ on the set options form).
f. Bad DLCI error. This error occurs when a LAPD frame is received across
the DS1 facility which contains a DLCI which does not have a valid entry in
the on-board translation memory. This error normally indicates an
off-board problem usually related to a broken endpoint or a state
mismatch between a remote endpoint and the local call processing
software. Maintenance will not start any testing or generate any alarms in
response to this error.
g. Receive FIFO Overflow error. This error occurs when the circuit pack
detects an overflow of its receive buffers. If it occurs frequently, it may
indicate a LAPD parameter mismatch between the two end-points of a
packet switched connection. LAPD should be able to recover from this
problem, but it may degrade the performance of the LAN Bus.
Maintenance will not start any testing or generate any alarms in response
to this error.
h. This error occurs when the
Signaling Port LAN Loopback Test (#939)
fails.
Run the long test sequence and pay particular attention to the results of
Test #939.
