Avaya CMC1, Процедуры обслуживания

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Troubleshooting
Troubleshooting ISDN-PRI endpoints (wideband)
210 Maintenance Procedures
December 2003
This troubleshooting procedure is limited to diagnosing faults between the switch and either the ISDN-
PRI’s:
• Line-side terminal adapter
• Endpoint equipment
Problems encountered on the network side of a wideband connection or problems with end-to-end
equipment compatibility are beyond the scope of this section.
S8100
On the S8100, Figure 60, Processing of PRI endpoint problems (page 1 of 2), on page 211 and Figure 61,
Processing of PRI endpoint problems (page 1 of 2), on page 212 show the processing of PRI endpoint
problems.
START
Are there alarms or errors against any of
the following maintenance objects (MOs):
UDS1-BD, PKT-INT, SYS-LINK, ISDN-
LNK, ISDN-SGR, PE-BCHL YES
→
Resolve those alarms or errors in the order listed
at left by following procedures for the
appropriate MO in Maintenance Alarms
Reference (555-245-102).
↓
NO
Check the status of the endpoint
equipment or terminal adaptor. (Do this at
the endpoint, not at the G3-MT.)
↓
Does the adaptor or endpoint indicate
problems?
↓
NO
YES
→
Follow repair procedures recommended by the
provider of the terminal adapter or endpoint
equipment.
Check administration at the endpoint and
on the switch (for example, port boundary
width). Are they inconsistent? YES
→
Correct the administration so that both ends
match.
↓
NO
Does every call fail, or are the failures
transient?
↓
Transient Failures
Always
Fails
→
Check the health of the application equipment
(for example, the video codec) and that of the
S8700 Media Server network. If constant
failures persist, follow normal escalation
procedures.
Use list measurements ds1 to check for
bit errors over the DS1 interface between
the switch and the terminal adapter or
endpoint equipment.
↓
No bit errors
Bit
Errors
→
Perform an in-depth analysis of the DS1
interface including premises distribution wiring,
endpoint equipment, and any other possible
source of noise. If the problem cannot be
isolated, follow normal escalation procedures.
Check for alarms and errors against
SYNC. Has a synchronization source
been unstable, or has the system switched
synch sources? YES
→
Follow procedures described in SYNC in
Maintenance Alarms Reference (555-245-102).
↓
NO
Follow normal escalation procedures.